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Finding the Fourth Proportional to 243,310.38, 335,719.62 and 135,863.88

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Solution

The fourth proportional to 243,310.38, 335,719.62 and 135,863.88 is: 187,464.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,310.38 : 335,719.62 = 135,863.88 : x
  2. Step 2: Convert to fraction form
    243,310.38/335,719.62 = 135,863.88/x
  3. Step 3: Cross multiply
    243,310.38x = 335,719.62 × 135,863.88
  4. Step 4: Simplify right side
    243,310.38x = 45,612,170,165.33
  5. Step 5: Solve for x
    x = 45,612,170,165.33/243,310.38
  6. Step 6: Final answer
    x = 187,464.96

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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.