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Finding the Fourth Proportional to 269,683.80, 404,579.70 and 80,143.80

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Solution

The fourth proportional to 269,683.80, 404,579.70 and 80,143.80 is: 120,231.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,683.80 : 404,579.70 = 80,143.80 : x
  2. Step 2: Convert to fraction form
    269,683.80/404,579.70 = 80,143.80/x
  3. Step 3: Cross multiply
    269,683.80x = 404,579.70 × 80,143.80
  4. Step 4: Simplify right side
    269,683.80x = 32,424,554,560.86
  5. Step 5: Solve for x
    x = 32,424,554,560.86/269,683.80
  6. Step 6: Final answer
    x = 120,231.75

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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.