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Finding the Fourth Proportional to 269,861.80, 404,722.14 and 80,271.12

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Solution

The fourth proportional to 269,861.80, 404,722.14 and 80,271.12 is: 120,385.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,861.80 : 404,722.14 = 80,271.12 : x
  2. Step 2: Convert to fraction form
    269,861.80/404,722.14 = 80,271.12/x
  3. Step 3: Cross multiply
    269,861.80x = 404,722.14 × 80,271.12
  4. Step 4: Simplify right side
    269,861.80x = 32,487,499,466.60
  5. Step 5: Solve for x
    x = 32,487,499,466.60/269,861.80
  6. Step 6: Final answer
    x = 120,385.69

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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.