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Finding the Fourth Proportional to 269,042.61, 403,620.85 and 89,117.86

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Solution

The fourth proportional to 269,042.61, 403,620.85 and 89,117.86 is: 133,695.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,042.61 : 403,620.85 = 89,117.86 : x
  2. Step 2: Convert to fraction form
    269,042.61/403,620.85 = 89,117.86/x
  3. Step 3: Cross multiply
    269,042.61x = 403,620.85 × 89,117.86
  4. Step 4: Simplify right side
    269,042.61x = 35,969,825,444.28
  5. Step 5: Solve for x
    x = 35,969,825,444.28/269,042.61
  6. Step 6: Final answer
    x = 133,695.64

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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.