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Finding the Fourth Proportional to 266,016.14, 399,019.99 and 123,781.87

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Solution

The fourth proportional to 266,016.14, 399,019.99 and 123,781.87 is: 185,670.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,016.14 : 399,019.99 = 123,781.87 : x
  2. Step 2: Convert to fraction form
    266,016.14/399,019.99 = 123,781.87/x
  3. Step 3: Cross multiply
    266,016.14x = 399,019.99 × 123,781.87
  4. Step 4: Simplify right side
    266,016.14x = 49,391,440,529.58
  5. Step 5: Solve for x
    x = 49,391,440,529.58/266,016.14
  6. Step 6: Final answer
    x = 185,670.84

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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.