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Finding the Fourth Proportional to 269,080.20, 403,638.60 and 89,165.20

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Solution

The fourth proportional to 269,080.20, 403,638.60 and 89,165.20 is: 133,753.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,080.20 : 403,638.60 = 89,165.20 : x
  2. Step 2: Convert to fraction form
    269,080.20/403,638.60 = 89,165.20/x
  3. Step 3: Cross multiply
    269,080.20x = 403,638.60 × 89,165.20
  4. Step 4: Simplify right side
    269,080.20x = 35,990,516,496.72
  5. Step 5: Solve for x
    x = 35,990,516,496.72/269,080.20
  6. Step 6: Final answer
    x = 133,753.86

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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.