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Finding the Fourth Proportional to 239,641.76, 330,711.96 and 132,213.20

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Solution

The fourth proportional to 239,641.76, 330,711.96 and 132,213.20 is: 182,457.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,641.76 : 330,711.96 = 132,213.20 : x
  2. Step 2: Convert to fraction form
    239,641.76/330,711.96 = 132,213.20/x
  3. Step 3: Cross multiply
    239,641.76x = 330,711.96 × 132,213.20
  4. Step 4: Simplify right side
    239,641.76x = 43,724,486,509.87
  5. Step 5: Solve for x
    x = 43,724,486,509.87/239,641.76
  6. Step 6: Final answer
    x = 182,457.71

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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.