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Finding the Fourth Proportional to 243,229.52, 364,863.72 and 85,493.36

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Solution

The fourth proportional to 243,229.52, 364,863.72 and 85,493.36 is: 128,246.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,229.52 : 364,863.72 = 85,493.36 : x
  2. Step 2: Convert to fraction form
    243,229.52/364,863.72 = 85,493.36/x
  3. Step 3: Cross multiply
    243,229.52x = 364,863.72 × 85,493.36
  4. Step 4: Simplify right side
    243,229.52x = 31,193,423,540.58
  5. Step 5: Solve for x
    x = 31,193,423,540.58/243,229.52
  6. Step 6: Final answer
    x = 128,246.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.