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Finding the Fourth Proportional to 238,902.32, 329,685.24 and 131,480

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Solution

The fourth proportional to 238,902.32, 329,685.24 and 131,480 is: 181,442.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,902.32 : 329,685.24 = 131,480 : x
  2. Step 2: Convert to fraction form
    238,902.32/329,685.24 = 131,480/x
  3. Step 3: Cross multiply
    238,902.32x = 329,685.24 × 131,480
  4. Step 4: Simplify right side
    238,902.32x = 43,347,015,355.20
  5. Step 5: Solve for x
    x = 43,347,015,355.20/238,902.32
  6. Step 6: Final answer
    x = 181,442.42

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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.