Finding the Fourth Proportional to 290,315,464.80, 436,122,003.60 and 242,539,720.80
Calculator
Solution
The fourth proportional to 290,315,464.80, 436,122,003.60 and 242,539,720.80 is: 364,351,616.82
Step by Step Solution
- Step 1: Write the proportion equation
290,315,464.80 : 436,122,003.60 = 242,539,720.80 : x - Step 2: Convert to fraction form
290,315,464.80/436,122,003.60 = 242,539,720.80/x - Step 3: Cross multiply
290,315,464.80x = 436,122,003.60 × 242,539,720.80 - Step 4: Simplify right side
290,315,464.80x = 105,776,908,987,880,608 - Step 5: Solve for x
x = 105,776,908,987,880,608/290,315,464.80 - Step 6: Final answer
x = 364,351,616.82
Related Problems
Find fourth proportional to 145,157,732.40, 218,061,001.80 and 121,269,860.40
Half scale
Find fourth proportional to 580,630,929.60, 872,244,007.20 and 485,079,441.60
Double scale
Find fourth proportional to 290,315,465.80, 436,122,005.10 and 242,539,721.80
Similar ratio
Find fourth proportional to 435,473,197.20, 654,183,005.40 and 363,809,581.20
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.