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Finding the Fourth Proportional to 266,571.91, 399,878.47 and 89,079.55

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Solution

The fourth proportional to 266,571.91, 399,878.47 and 89,079.55 is: 133,626.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,571.91 : 399,878.47 = 89,079.55 : x
  2. Step 2: Convert to fraction form
    266,571.91/399,878.47 = 89,079.55/x
  3. Step 3: Cross multiply
    266,571.91x = 399,878.47 × 89,079.55
  4. Step 4: Simplify right side
    266,571.91x = 35,620,993,273.94
  5. Step 5: Solve for x
    x = 35,620,993,273.94/266,571.91
  6. Step 6: Final answer
    x = 133,626.21

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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.