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Finding the Fourth Proportional to 431,652.70, 647,527.65 and 132,130.90

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Solution

The fourth proportional to 431,652.70, 647,527.65 and 132,130.90 is: 198,211.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,652.70 : 647,527.65 = 132,130.90 : x
  2. Step 2: Convert to fraction form
    431,652.70/647,527.65 = 132,130.90/x
  3. Step 3: Cross multiply
    431,652.70x = 647,527.65 × 132,130.90
  4. Step 4: Simplify right side
    431,652.70x = 85,558,411,169.39
  5. Step 5: Solve for x
    x = 85,558,411,169.39/431,652.70
  6. Step 6: Final answer
    x = 198,211.23

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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.