Home / 396,505.60-547,178.28-215,217.56

Finding the Fourth Proportional to 396,505.60, 547,178.28 and 215,217.56

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Solution

The fourth proportional to 396,505.60, 547,178.28 and 215,217.56 is: 297,000.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,505.60 : 547,178.28 = 215,217.56 : x
  2. Step 2: Convert to fraction form
    396,505.60/547,178.28 = 215,217.56/x
  3. Step 3: Cross multiply
    396,505.60x = 547,178.28 × 215,217.56
  4. Step 4: Simplify right side
    396,505.60x = 117,762,374,306.60
  5. Step 5: Solve for x
    x = 117,762,374,306.60/396,505.60
  6. Step 6: Final answer
    x = 297,000.53

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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.