Finding the Fourth Proportional to 212,463,691.20, 318,695,536.80 and 126,157,672.80
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Solution
The fourth proportional to 212,463,691.20, 318,695,536.80 and 126,157,672.80 is: 189,236,509.20
Step by Step Solution
- Step 1: Write the proportion equation
212,463,691.20 : 318,695,536.80 = 126,157,672.80 : x - Step 2: Convert to fraction form
212,463,691.20/318,695,536.80 = 126,157,672.80/x - Step 3: Cross multiply
212,463,691.20x = 318,695,536.80 × 126,157,672.80 - Step 4: Simplify right side
212,463,691.20x = 40,205,887,254,434,760 - Step 5: Solve for x
x = 40,205,887,254,434,760/212,463,691.20 - Step 6: Final answer
x = 189,236,509.20
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.