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Finding the Fourth Proportional to 243,431.33, 335,932.94 and 136,019.87

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Solution

The fourth proportional to 243,431.33, 335,932.94 and 136,019.87 is: 187,706.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,431.33 : 335,932.94 = 136,019.87 : x
  2. Step 2: Convert to fraction form
    243,431.33/335,932.94 = 136,019.87/x
  3. Step 3: Cross multiply
    243,431.33x = 335,932.94 × 136,019.87
  4. Step 4: Simplify right side
    243,431.33x = 45,693,553,487.90
  5. Step 5: Solve for x
    x = 45,693,553,487.90/243,431.33
  6. Step 6: Final answer
    x = 187,706.13

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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.