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Finding the Fourth Proportional to 238,171.68, 328,676.10 and 129,276.04

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Solution

The fourth proportional to 238,171.68, 328,676.10 and 129,276.04 is: 178,400.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,171.68 : 328,676.10 = 129,276.04 : x
  2. Step 2: Convert to fraction form
    238,171.68/328,676.10 = 129,276.04/x
  3. Step 3: Cross multiply
    238,171.68x = 328,676.10 × 129,276.04
  4. Step 4: Simplify right side
    238,171.68x = 42,489,944,650.64
  5. Step 5: Solve for x
    x = 42,489,944,650.64/238,171.68
  6. Step 6: Final answer
    x = 178,400.49

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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.