Finding the Fourth Proportional to 378,363.18, 522,120.27 and 217,207.68
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Solution
The fourth proportional to 378,363.18, 522,120.27 and 217,207.68 is: 299,734.59
Step by Step Solution
- Step 1: Write the proportion equation
378,363.18 : 522,120.27 = 217,207.68 : x - Step 2: Convert to fraction form
378,363.18/522,120.27 = 217,207.68/x - Step 3: Cross multiply
378,363.18x = 522,120.27 × 217,207.68 - Step 4: Simplify right side
378,363.18x = 113,408,532,527.67 - Step 5: Solve for x
x = 113,408,532,527.67/378,363.18 - Step 6: Final answer
x = 299,734.59
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1.5x scale
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.