Finding the Fourth Proportional to 216,691.92, 324,979.64 and 76,432.08
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Solution
The fourth proportional to 216,691.92, 324,979.64 and 76,432.08 is: 114,627.58
Step by Step Solution
- Step 1: Write the proportion equation
216,691.92 : 324,979.64 = 76,432.08 : x - Step 2: Convert to fraction form
216,691.92/324,979.64 = 76,432.08/x - Step 3: Cross multiply
216,691.92x = 324,979.64 × 76,432.08 - Step 4: Simplify right side
216,691.92x = 24,838,869,842.85 - Step 5: Solve for x
x = 24,838,869,842.85/216,691.92 - Step 6: Final answer
x = 114,627.58
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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.