Finding the Fourth Proportional to 287,432.81, 431,129.17 and 107,484.02
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Solution
The fourth proportional to 287,432.81, 431,129.17 and 107,484.02 is: 161,218.53
Step by Step Solution
- Step 1: Write the proportion equation
287,432.81 : 431,129.17 = 107,484.02 : x - Step 2: Convert to fraction form
287,432.81/431,129.17 = 107,484.02/x - Step 3: Cross multiply
287,432.81x = 431,129.17 × 107,484.02 - Step 4: Simplify right side
287,432.81x = 46,339,496,330.86 - Step 5: Solve for x
x = 46,339,496,330.86/287,432.81 - Step 6: Final answer
x = 161,218.53
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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.