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Finding the Fourth Proportional to 266,561.53, 399,862.95 and 89,069.17

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Solution

The fourth proportional to 266,561.53, 399,862.95 and 89,069.17 is: 133,610.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,561.53 : 399,862.95 = 89,069.17 : x
  2. Step 2: Convert to fraction form
    266,561.53/399,862.95 = 89,069.17/x
  3. Step 3: Cross multiply
    266,561.53x = 399,862.95 × 89,069.17
  4. Step 4: Simplify right side
    266,561.53x = 35,615,461,237.85
  5. Step 5: Solve for x
    x = 35,615,461,237.85/266,561.53
  6. Step 6: Final answer
    x = 133,610.66

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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.