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Finding the Fourth Proportional to 238,656.60, 329,339.79 and 129,757.50

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Solution

The fourth proportional to 238,656.60, 329,339.79 and 129,757.50 is: 179,061.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,656.60 : 329,339.79 = 129,757.50 : x
  2. Step 2: Convert to fraction form
    238,656.60/329,339.79 = 129,757.50/x
  3. Step 3: Cross multiply
    238,656.60x = 329,339.79 × 129,757.50
  4. Step 4: Simplify right side
    238,656.60x = 42,734,307,800.93
  5. Step 5: Solve for x
    x = 42,734,307,800.93/238,656.60
  6. Step 6: Final answer
    x = 179,061.91

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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.