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Finding the Fourth Proportional to 266,573.91, 399,881.47 and 89,081.55

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Solution

The fourth proportional to 266,573.91, 399,881.47 and 89,081.55 is: 133,629.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,573.91 : 399,881.47 = 89,081.55 : x
  2. Step 2: Convert to fraction form
    266,573.91/399,881.47 = 89,081.55/x
  3. Step 3: Cross multiply
    266,573.91x = 399,881.47 × 89,081.55
  4. Step 4: Simplify right side
    266,573.91x = 35,622,061,163.88
  5. Step 5: Solve for x
    x = 35,622,061,163.88/266,573.91
  6. Step 6: Final answer
    x = 133,629.21

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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.