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Finding the Fourth Proportional to 266,572.91, 399,879.97 and 89,080.55

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Solution

The fourth proportional to 266,572.91, 399,879.97 and 89,080.55 is: 133,627.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,572.91 : 399,879.97 = 89,080.55 : x
  2. Step 2: Convert to fraction form
    266,572.91/399,879.97 = 89,080.55/x
  3. Step 3: Cross multiply
    266,572.91x = 399,879.97 × 89,080.55
  4. Step 4: Simplify right side
    266,572.91x = 35,621,527,661.58
  5. Step 5: Solve for x
    x = 35,621,527,661.58/266,572.91
  6. Step 6: Final answer
    x = 133,627.71

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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.