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Finding the Fourth Proportional to 238,115.70, 328,600.80 and 130,687.02

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Solution

The fourth proportional to 238,115.70, 328,600.80 and 130,687.02 is: 180,348.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,115.70 : 328,600.80 = 130,687.02 : x
  2. Step 2: Convert to fraction form
    238,115.70/328,600.80 = 130,687.02/x
  3. Step 3: Cross multiply
    238,115.70x = 328,600.80 × 130,687.02
  4. Step 4: Simplify right side
    238,115.70x = 42,943,859,321.62
  5. Step 5: Solve for x
    x = 42,943,859,321.62/238,115.70
  6. Step 6: Final answer
    x = 180,348.71

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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.