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Finding the Fourth Proportional to 431,963.10, 648,069.00 and 132,487.62

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Solution

The fourth proportional to 431,963.10, 648,069.00 and 132,487.62 is: 198,769.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,963.10 : 648,069.00 = 132,487.62 : x
  2. Step 2: Convert to fraction form
    431,963.10/648,069.00 = 132,487.62/x
  3. Step 3: Cross multiply
    431,963.10x = 648,069.00 × 132,487.62
  4. Step 4: Simplify right side
    431,963.10x = 85,861,118,743.34
  5. Step 5: Solve for x
    x = 85,861,118,743.34/431,963.10
  6. Step 6: Final answer
    x = 198,769.57

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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.