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Finding the Fourth Proportional to 266,233.72, 399,005.88 and 108,278.68

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Solution

The fourth proportional to 266,233.72, 399,005.88 and 108,278.68 is: 162,277.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,233.72 : 399,005.88 = 108,278.68 : x
  2. Step 2: Convert to fraction form
    266,233.72/399,005.88 = 108,278.68/x
  3. Step 3: Cross multiply
    266,233.72x = 399,005.88 × 108,278.68
  4. Step 4: Simplify right side
    266,233.72x = 43,203,829,998.64
  5. Step 5: Solve for x
    x = 43,203,829,998.64/266,233.72
  6. Step 6: Final answer
    x = 162,277.83

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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.