Risk of ruin at 150, 200, 400 BB

[ChicagoTroy]

I'm wondering how to calculate my risk of ruin given a larger or smaller than BR of 300 BB. I know the equation is in GTAOT, but I don't own it yet. Can somebody let me know how this works?

[uuDevil]

Have a look at this post from BruceZ:
ROR and Bankroll (http://archiveserver.twoplustwo.com/showthreaded.php?Cat=&Number=207170&page=&view=&sb =5&o=&vc=1)