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Finding the Fourth Proportional to 321,810.57, 482,871.38 and 132,410.70

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Solution

The fourth proportional to 321,810.57, 482,871.38 and 132,410.70 is: 198,680.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,810.57 : 482,871.38 = 132,410.70 : x
  2. Step 2: Convert to fraction form
    321,810.57/482,871.38 = 132,410.70/x
  3. Step 3: Cross multiply
    321,810.57x = 482,871.38 × 132,410.70
  4. Step 4: Simplify right side
    321,810.57x = 63,937,336,773.71
  5. Step 5: Solve for x
    x = 63,937,336,773.71/321,810.57
  6. Step 6: Final answer
    x = 198,680.04

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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.