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Finding the Fourth Proportional to 269,575.67, 404,294.28 and 79,991.21

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Solution

The fourth proportional to 269,575.67, 404,294.28 and 79,991.21 is: 119,966.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,575.67 : 404,294.28 = 79,991.21 : x
  2. Step 2: Convert to fraction form
    269,575.67/404,294.28 = 79,991.21/x
  3. Step 3: Cross multiply
    269,575.67x = 404,294.28 × 79,991.21
  4. Step 4: Simplify right side
    269,575.67x = 32,339,986,631.81
  5. Step 5: Solve for x
    x = 32,339,986,631.81/269,575.67
  6. Step 6: Final answer
    x = 119,966.27

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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.