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Finding the Fourth Proportional to 266,622.56, 399,786.96 and 89,036

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Solution

The fourth proportional to 266,622.56, 399,786.96 and 89,036 is: 133,504.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,622.56 : 399,786.96 = 89,036 : x
  2. Step 2: Convert to fraction form
    266,622.56/399,786.96 = 89,036/x
  3. Step 3: Cross multiply
    266,622.56x = 399,786.96 × 89,036
  4. Step 4: Simplify right side
    266,622.56x = 35,595,431,770.56
  5. Step 5: Solve for x
    x = 35,595,431,770.56/266,622.56
  6. Step 6: Final answer
    x = 133,504.95

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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.