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Finding the Fourth Proportional to 266,037.62, 399,012.68 and 79,005.38

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Solution

The fourth proportional to 266,037.62, 399,012.68 and 79,005.38 is: 118,495.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,037.62 : 399,012.68 = 79,005.38 : x
  2. Step 2: Convert to fraction form
    266,037.62/399,012.68 = 79,005.38/x
  3. Step 3: Cross multiply
    266,037.62x = 399,012.68 × 79,005.38
  4. Step 4: Simplify right side
    266,037.62x = 31,524,146,610.67
  5. Step 5: Solve for x
    x = 31,524,146,610.67/266,037.62
  6. Step 6: Final answer
    x = 118,495.07

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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.