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Finding the Fourth Proportional to 396,494.87, 547,148.25 and 215,202.89

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Solution

The fourth proportional to 396,494.87, 547,148.25 and 215,202.89 is: 296,972.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,494.87 : 547,148.25 = 215,202.89 : x
  2. Step 2: Convert to fraction form
    396,494.87/547,148.25 = 215,202.89/x
  3. Step 3: Cross multiply
    396,494.87x = 547,148.25 × 215,202.89
  4. Step 4: Simplify right side
    396,494.87x = 117,747,886,026.31
  5. Step 5: Solve for x
    x = 117,747,886,026.31/396,494.87
  6. Step 6: Final answer
    x = 296,972.03

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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.