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Finding the Fourth Proportional to 331,689.60, 497,534.40 and 82,371.60

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Solution

The fourth proportional to 331,689.60, 497,534.40 and 82,371.60 is: 123,557.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,689.60 : 497,534.40 = 82,371.60 : x
  2. Step 2: Convert to fraction form
    331,689.60/497,534.40 = 82,371.60/x
  3. Step 3: Cross multiply
    331,689.60x = 497,534.40 × 82,371.60
  4. Step 4: Simplify right side
    331,689.60x = 40,982,704,583.04
  5. Step 5: Solve for x
    x = 40,982,704,583.04/331,689.60
  6. Step 6: Final answer
    x = 123,557.40

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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.