Finding the Fourth Proportional to 221,298,757.20, 331,948,135.80 and 135,205,315.20
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Solution
The fourth proportional to 221,298,757.20, 331,948,135.80 and 135,205,315.20 is: 202,807,972.80
Step by Step Solution
- Step 1: Write the proportion equation
221,298,757.20 : 331,948,135.80 = 135,205,315.20 : x - Step 2: Convert to fraction form
221,298,757.20/331,948,135.80 = 135,205,315.20/x - Step 3: Cross multiply
221,298,757.20x = 331,948,135.80 × 135,205,315.20 - Step 4: Simplify right side
221,298,757.20x = 44,881,152,330,891,400 - Step 5: Solve for x
x = 44,881,152,330,891,400/221,298,757.20 - Step 6: Final answer
x = 202,807,972.80
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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.