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Finding the Fourth Proportional to 396,956.50, 547,796.97 and 215,669.92

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Solution

The fourth proportional to 396,956.50, 547,796.97 and 215,669.92 is: 297,622.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,956.50 : 547,796.97 = 215,669.92 : x
  2. Step 2: Convert to fraction form
    396,956.50/547,796.97 = 215,669.92/x
  3. Step 3: Cross multiply
    396,956.50x = 547,796.97 × 215,669.92
  4. Step 4: Simplify right side
    396,956.50x = 118,143,328,696.14
  5. Step 5: Solve for x
    x = 118,143,328,696.14/396,956.50
  6. Step 6: Final answer
    x = 297,622.86

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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.