Finding the Fourth Proportional to 378,489.18, 522,291.18 and 217,230.72
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Solution
The fourth proportional to 378,489.18, 522,291.18 and 217,230.72 is: 299,764.68
Step by Step Solution
- Step 1: Write the proportion equation
378,489.18 : 522,291.18 = 217,230.72 : x - Step 2: Convert to fraction form
378,489.18/522,291.18 = 217,230.72/x - Step 3: Cross multiply
378,489.18x = 522,291.18 × 217,230.72 - Step 4: Simplify right side
378,489.18x = 113,457,689,081.05 - Step 5: Solve for x
x = 113,457,689,081.05/378,489.18 - Step 6: Final answer
x = 299,764.68
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.