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Finding the Fourth Proportional to 238,274.89, 328,823.11 and 129,379.16

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Solution

The fourth proportional to 238,274.89, 328,823.11 and 129,379.16 is: 178,545.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,274.89 : 328,823.11 = 129,379.16 : x
  2. Step 2: Convert to fraction form
    238,274.89/328,823.11 = 129,379.16/x
  3. Step 3: Cross multiply
    238,274.89x = 328,823.11 × 129,379.16
  4. Step 4: Simplify right side
    238,274.89x = 42,542,858,744.17
  5. Step 5: Solve for x
    x = 42,542,858,744.17/238,274.89
  6. Step 6: Final answer
    x = 178,545.29

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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.