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Finding the Fourth Proportional to 238,992.12, 329,812.92 and 137,026.56

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Solution

The fourth proportional to 238,992.12, 329,812.92 and 137,026.56 is: 189,098.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,992.12 : 329,812.92 = 137,026.56 : x
  2. Step 2: Convert to fraction form
    238,992.12/329,812.92 = 137,026.56/x
  3. Step 3: Cross multiply
    238,992.12x = 329,812.92 × 137,026.56
  4. Step 4: Simplify right side
    238,992.12x = 45,193,129,871.16
  5. Step 5: Solve for x
    x = 45,193,129,871.16/238,992.12
  6. Step 6: Final answer
    x = 189,098.83

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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.