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Finding the Fourth Proportional to 396,924.68, 547,454.28 and 274,620.56

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Solution

The fourth proportional to 396,924.68, 547,454.28 and 274,620.56 is: 378,767.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,924.68 : 547,454.28 = 274,620.56 : x
  2. Step 2: Convert to fraction form
    396,924.68/547,454.28 = 274,620.56/x
  3. Step 3: Cross multiply
    396,924.68x = 547,454.28 × 274,620.56
  4. Step 4: Simplify right side
    396,924.68x = 150,342,200,948.00
  5. Step 5: Solve for x
    x = 150,342,200,948.00/396,924.68
  6. Step 6: Final answer
    x = 378,767.58

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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.