Finding the Fourth Proportional to 368,412,398.52, 508,453,691.76 and 209,681,114.70
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Solution
The fourth proportional to 368,412,398.52, 508,453,691.76 and 209,681,114.70 is: 289,385,311.92
Step by Step Solution
- Step 1: Write the proportion equation
368,412,398.52 : 508,453,691.76 = 209,681,114.70 : x - Step 2: Convert to fraction form
368,412,398.52/508,453,691.76 = 209,681,114.70/x - Step 3: Cross multiply
368,412,398.52x = 508,453,691.76 × 209,681,114.70 - Step 4: Simplify right side
368,412,398.52x = 106,613,136,861,566,992 - Step 5: Solve for x
x = 106,613,136,861,566,992/368,412,398.52 - Step 6: Final answer
x = 289,385,311.92
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.