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Finding the Fourth Proportional to 238,628.79, 329,308.82 and 129,734.19

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Solution

The fourth proportional to 238,628.79, 329,308.82 and 129,734.19 is: 179,033.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,628.79 : 329,308.82 = 129,734.19 : x
  2. Step 2: Convert to fraction form
    238,628.79/329,308.82 = 129,734.19/x
  3. Step 3: Cross multiply
    238,628.79x = 329,308.82 × 129,734.19
  4. Step 4: Simplify right side
    238,628.79x = 42,722,612,373.88
  5. Step 5: Solve for x
    x = 42,722,612,373.88/238,628.79
  6. Step 6: Final answer
    x = 179,033.77

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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.