Confusing power level multiplier Power levels are so confusing throughout the DBZ series. 

For example:

Kaioken = x2 base
Kaioken x3 = x3 base
Kaioken x4 = x4 base

and so on...

SSJ = x50 base
SSJ Grade 2 = ?
SSJ Grade 3 = ?
SSJ2 = x100 base
SSJ3 = x400 base
SSJ4 = ?
SSJG = ?
SSJGSSJ = ?
LSSJ = ?

Fusion = ?
Fusion Dance = ?
Potara Fusion = ?

Frieza form 1 = 1x base
Frieza form 2 = ?
Frieza form 3 = ?
Frieza form final (full power) = ?
Future Frieza = ? (Same with final form?)
Golden Frieza = ?

Super Buu's Absorption = ? (times the victim's power level)

The unknown factor ("?") makes me confuse about their power levels. Any ideas? Thanks.
This wikia page summarizes the known power levels from the original Dragon Ball series up to Dragon Ball GT. According to the wikia page:


  All of the levels on this list are taken from the manga, anime, movies, movie pamphlets, Daizenshuu guides, video games and stated mathematical calculations. After the Frieza Saga, the only power level stated by a scouter in the series is that of Future Trunks. In the 2000s, V-Jump revealed the official power levels of Cooler in his Final Form, Broly in his Legendary Super Saiyan form, and Gogeta in his Super Saiyan form.


Therefore, we only have the power levels up to SSJ1, with the exceptions listed above.

The concept of numbered power levels was introduced in the Saiyan Saga. My theory is that Akira Toriyama quickly realised that this was a dangerous path: it is not easy to keep the same consistency throughout the series, especially when we know how forgetful the author can be. After the Frieza saga, no additional power levels were introduced. I will be very surprised if they make a come back in Dragon Ball Super.