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Finding the Fourth Proportional to 396,873.52, 547,695.65 and 215,595.83

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Solution

The fourth proportional to 396,873.52, 547,695.65 and 215,595.83 is: 297,527.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,873.52 : 547,695.65 = 215,595.83 : x
  2. Step 2: Convert to fraction form
    396,873.52/547,695.65 = 215,595.83/x
  3. Step 3: Cross multiply
    396,873.52x = 547,695.65 × 215,595.83
  4. Step 4: Simplify right side
    396,873.52x = 118,080,896,470.22
  5. Step 5: Solve for x
    x = 118,080,896,470.22/396,873.52
  6. Step 6: Final answer
    x = 297,527.78

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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.