Finding the Fourth Proportional to 384,172,756.72, 576,079,728.12 and 138,497,035.12
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Solution
The fourth proportional to 384,172,756.72, 576,079,728.12 and 138,497,035.12 is: 207,680,875.18
Step by Step Solution
- Step 1: Write the proportion equation
384,172,756.72 : 576,079,728.12 = 138,497,035.12 : x - Step 2: Convert to fraction form
384,172,756.72/576,079,728.12 = 138,497,035.12/x - Step 3: Cross multiply
384,172,756.72x = 576,079,728.12 × 138,497,035.12 - Step 4: Simplify right side
384,172,756.72x = 79,785,334,337,355,696 - Step 5: Solve for x
x = 79,785,334,337,355,696/384,172,756.72 - Step 6: Final answer
x = 207,680,875.18
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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.