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Finding the Fourth Proportional to 266,185.81, 399,342.26 and 88,694.36

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Solution

The fourth proportional to 266,185.81, 399,342.26 and 88,694.36 is: 133,062.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,185.81 : 399,342.26 = 88,694.36 : x
  2. Step 2: Convert to fraction form
    266,185.81/399,342.26 = 88,694.36/x
  3. Step 3: Cross multiply
    266,185.81x = 399,342.26 × 88,694.36
  4. Step 4: Simplify right side
    266,185.81x = 35,419,404,396.68
  5. Step 5: Solve for x
    x = 35,419,404,396.68/266,185.81
  6. Step 6: Final answer
    x = 133,062.71

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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.