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Finding the Fourth Proportional to 396,470.50, 547,129.83 and 215,182.43

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Solution

The fourth proportional to 396,470.50, 547,129.83 and 215,182.43 is: 296,952.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,470.50 : 547,129.83 = 215,182.43 : x
  2. Step 2: Convert to fraction form
    396,470.50/547,129.83 = 215,182.43/x
  3. Step 3: Cross multiply
    396,470.50x = 547,129.83 × 215,182.43
  4. Step 4: Simplify right side
    396,470.50x = 117,732,725,085.61
  5. Step 5: Solve for x
    x = 117,732,725,085.61/396,470.50
  6. Step 6: Final answer
    x = 296,952.04

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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.