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Finding the Fourth Proportional to 396,546.60, 547,235.01 and 215,258.66

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Solution

The fourth proportional to 396,546.60, 547,235.01 and 215,258.66 is: 297,057.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,546.60 : 547,235.01 = 215,258.66 : x
  2. Step 2: Convert to fraction form
    396,546.60/547,235.01 = 215,258.66/x
  3. Step 3: Cross multiply
    396,546.60x = 547,235.01 × 215,258.66
  4. Step 4: Simplify right side
    396,546.60x = 117,797,074,957.69
  5. Step 5: Solve for x
    x = 117,797,074,957.69/396,546.60
  6. Step 6: Final answer
    x = 297,057.33

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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.