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Finding the Fourth Proportional to 331,718.90, 497,643.15 and 132,005.30

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Solution

The fourth proportional to 331,718.90, 497,643.15 and 132,005.30 is: 198,033.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,718.90 : 497,643.15 = 132,005.30 : x
  2. Step 2: Convert to fraction form
    331,718.90/497,643.15 = 132,005.30/x
  3. Step 3: Cross multiply
    331,718.90x = 497,643.15 × 132,005.30
  4. Step 4: Simplify right side
    331,718.90x = 65,691,533,308.70
  5. Step 5: Solve for x
    x = 65,691,533,308.70/331,718.90
  6. Step 6: Final answer
    x = 198,033.74

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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.