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Finding the Fourth Proportional to 238,658.85, 329,342.90 and 129,759.75

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Solution

The fourth proportional to 238,658.85, 329,342.90 and 129,759.75 is: 179,065.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,658.85 : 329,342.90 = 129,759.75 : x
  2. Step 2: Convert to fraction form
    238,658.85/329,342.90 = 129,759.75/x
  3. Step 3: Cross multiply
    238,658.85x = 329,342.90 × 129,759.75
  4. Step 4: Simplify right side
    238,658.85x = 42,735,451,719.48
  5. Step 5: Solve for x
    x = 42,735,451,719.48/238,658.85
  6. Step 6: Final answer
    x = 179,065.02

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1.5x scale

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.