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Finding the Fourth Proportional to 238,543.32, 329,190.26 and 129,648.27

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Solution

The fourth proportional to 238,543.32, 329,190.26 and 129,648.27 is: 178,914.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,543.32 : 329,190.26 = 129,648.27 : x
  2. Step 2: Convert to fraction form
    238,543.32/329,190.26 = 129,648.27/x
  3. Step 3: Cross multiply
    238,543.32x = 329,190.26 × 129,648.27
  4. Step 4: Simplify right side
    238,543.32x = 42,678,947,061.61
  5. Step 5: Solve for x
    x = 42,678,947,061.61/238,543.32
  6. Step 6: Final answer
    x = 178,914.87

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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.