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Finding the Fourth Proportional to 266,791.68, 400,188.24 and 109,020.15

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Solution

The fourth proportional to 266,791.68, 400,188.24 and 109,020.15 is: 163,530.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,791.68 : 400,188.24 = 109,020.15 : x
  2. Step 2: Convert to fraction form
    266,791.68/400,188.24 = 109,020.15/x
  3. Step 3: Cross multiply
    266,791.68x = 400,188.24 × 109,020.15
  4. Step 4: Simplify right side
    266,791.68x = 43,628,581,953.04
  5. Step 5: Solve for x
    x = 43,628,581,953.04/266,791.68
  6. Step 6: Final answer
    x = 163,530.52

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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.