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Finding the Fourth Proportional to 361,198.26, 498,471.48 and 217,955.88

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Solution

The fourth proportional to 361,198.26, 498,471.48 and 217,955.88 is: 300,789.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,198.26 : 498,471.48 = 217,955.88 : x
  2. Step 2: Convert to fraction form
    361,198.26/498,471.48 = 217,955.88/x
  3. Step 3: Cross multiply
    361,198.26x = 498,471.48 × 217,955.88
  4. Step 4: Simplify right side
    361,198.26x = 108,644,790,078.30
  5. Step 5: Solve for x
    x = 108,644,790,078.30/361,198.26
  6. Step 6: Final answer
    x = 300,789.90

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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.