Finding the Fourth Proportional to 252,387,910.80, 378,581,866.20 and 157,767,793.20
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Solution
The fourth proportional to 252,387,910.80, 378,581,866.20 and 157,767,793.20 is: 236,651,689.80
Step by Step Solution
- Step 1: Write the proportion equation
252,387,910.80 : 378,581,866.20 = 157,767,793.20 : x - Step 2: Convert to fraction form
252,387,910.80/378,581,866.20 = 157,767,793.20/x - Step 3: Cross multiply
252,387,910.80x = 378,581,866.20 × 157,767,793.20 - Step 4: Simplify right side
252,387,910.80x = 59,728,025,575,911,664 - Step 5: Solve for x
x = 59,728,025,575,911,664/252,387,910.80 - Step 6: Final answer
x = 236,651,689.80
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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.