Home / 396,724.38-547,483.61-215,437.87

Finding the Fourth Proportional to 396,724.38, 547,483.61 and 215,437.87

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Solution

The fourth proportional to 396,724.38, 547,483.61 and 215,437.87 is: 297,306.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,724.38 : 547,483.61 = 215,437.87 : x
  2. Step 2: Convert to fraction form
    396,724.38/547,483.61 = 215,437.87/x
  3. Step 3: Cross multiply
    396,724.38x = 547,483.61 × 215,437.87
  4. Step 4: Simplify right side
    396,724.38x = 117,948,702,798.31
  5. Step 5: Solve for x
    x = 117,948,702,798.31/396,724.38
  6. Step 6: Final answer
    x = 297,306.41

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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.