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Finding the Fourth Proportional to 269,571.45, 404,287.95 and 79,986.98

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Solution

The fourth proportional to 269,571.45, 404,287.95 and 79,986.98 is: 119,959.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,571.45 : 404,287.95 = 79,986.98 : x
  2. Step 2: Convert to fraction form
    269,571.45/404,287.95 = 79,986.98/x
  3. Step 3: Cross multiply
    269,571.45x = 404,287.95 × 79,986.98
  4. Step 4: Simplify right side
    269,571.45x = 32,337,770,149.45
  5. Step 5: Solve for x
    x = 32,337,770,149.45/269,571.45
  6. Step 6: Final answer
    x = 119,959.92

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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.