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Finding the Fourth Proportional to 238,999.68, 358,531.20 and 126,737.28

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Solution

The fourth proportional to 238,999.68, 358,531.20 and 126,737.28 is: 190,122.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,999.68 : 358,531.20 = 126,737.28 : x
  2. Step 2: Convert to fraction form
    238,999.68/358,531.20 = 126,737.28/x
  3. Step 3: Cross multiply
    238,999.68x = 358,531.20 × 126,737.28
  4. Step 4: Simplify right side
    238,999.68x = 45,439,269,083.14
  5. Step 5: Solve for x
    x = 45,439,269,083.14/238,999.68
  6. Step 6: Final answer
    x = 190,122.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.