Finding the Fourth Proportional to 391,414.44, 587,354.94 and 142,115.88
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Solution
The fourth proportional to 391,414.44, 587,354.94 and 142,115.88 is: 213,258.52
Step by Step Solution
- Step 1: Write the proportion equation
391,414.44 : 587,354.94 = 142,115.88 : x - Step 2: Convert to fraction form
391,414.44/587,354.94 = 142,115.88/x - Step 3: Cross multiply
391,414.44x = 587,354.94 × 142,115.88 - Step 4: Simplify right side
391,414.44x = 83,472,464,170.45 - Step 5: Solve for x
x = 83,472,464,170.45/391,414.44 - Step 6: Final answer
x = 213,258.52
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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.