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Finding the Fourth Proportional to 266,463.93, 399,758.81 and 86,548.80

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Solution

The fourth proportional to 266,463.93, 399,758.81 and 86,548.80 is: 129,843.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,463.93 : 399,758.81 = 86,548.80 : x
  2. Step 2: Convert to fraction form
    266,463.93/399,758.81 = 86,548.80/x
  3. Step 3: Cross multiply
    266,463.93x = 399,758.81 × 86,548.80
  4. Step 4: Simplify right side
    266,463.93x = 34,598,644,862.18
  5. Step 5: Solve for x
    x = 34,598,644,862.18/266,463.93
  6. Step 6: Final answer
    x = 129,843.63

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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.