Home / 396,640.20-547,360.26-215,348.55

Finding the Fourth Proportional to 396,640.20, 547,360.26 and 215,348.55

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Solution

The fourth proportional to 396,640.20, 547,360.26 and 215,348.55 is: 297,179.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,640.20 : 547,360.26 = 215,348.55 : x
  2. Step 2: Convert to fraction form
    396,640.20/547,360.26 = 215,348.55/x
  3. Step 3: Cross multiply
    396,640.20x = 547,360.26 × 215,348.55
  4. Step 4: Simplify right side
    396,640.20x = 117,873,238,318.62
  5. Step 5: Solve for x
    x = 117,873,238,318.62/396,640.20
  6. Step 6: Final answer
    x = 297,179.25

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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.