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Finding the Fourth Proportional to 238,771.92, 329,498.64 and 129,872.64

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Solution

The fourth proportional to 238,771.92, 329,498.64 and 129,872.64 is: 179,220.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,771.92 : 329,498.64 = 129,872.64 : x
  2. Step 2: Convert to fraction form
    238,771.92/329,498.64 = 129,872.64/x
  3. Step 3: Cross multiply
    238,771.92x = 329,498.64 × 129,872.64
  4. Step 4: Simplify right side
    238,771.92x = 42,792,858,253.21
  5. Step 5: Solve for x
    x = 42,792,858,253.21/238,771.92
  6. Step 6: Final answer
    x = 179,220.65

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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.