Home / 396,540.50-547,211.07-215,248.55

Finding the Fourth Proportional to 396,540.50, 547,211.07 and 215,248.55

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Solution

The fourth proportional to 396,540.50, 547,211.07 and 215,248.55 is: 297,034.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,540.50 : 547,211.07 = 215,248.55 : x
  2. Step 2: Convert to fraction form
    396,540.50/547,211.07 = 215,248.55/x
  3. Step 3: Cross multiply
    396,540.50x = 547,211.07 × 215,248.55
  4. Step 4: Simplify right side
    396,540.50x = 117,786,386,625.39
  5. Step 5: Solve for x
    x = 117,786,386,625.39/396,540.50
  6. Step 6: Final answer
    x = 297,034.95

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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.