Home / 396,517.86-547,194.78-215,229.78

Finding the Fourth Proportional to 396,517.86, 547,194.78 and 215,229.78

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Solution

The fourth proportional to 396,517.86, 547,194.78 and 215,229.78 is: 297,017.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,517.86 : 547,194.78 = 215,229.78 : x
  2. Step 2: Convert to fraction form
    396,517.86/547,194.78 = 215,229.78/x
  3. Step 3: Cross multiply
    396,517.86x = 547,194.78 × 215,229.78
  4. Step 4: Simplify right side
    396,517.86x = 117,772,612,116.55
  5. Step 5: Solve for x
    x = 117,772,612,116.55/396,517.86
  6. Step 6: Final answer
    x = 297,017.17

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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.