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Finding the Fourth Proportional to 269,722.20, 404,583.30 and 218,983.80

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Solution

The fourth proportional to 269,722.20, 404,583.30 and 218,983.80 is: 328,475.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,722.20 : 404,583.30 = 218,983.80 : x
  2. Step 2: Convert to fraction form
    269,722.20/404,583.30 = 218,983.80/x
  3. Step 3: Cross multiply
    269,722.20x = 404,583.30 × 218,983.80
  4. Step 4: Simplify right side
    269,722.20x = 88,597,188,450.54
  5. Step 5: Solve for x
    x = 88,597,188,450.54/269,722.20
  6. Step 6: Final answer
    x = 328,475.70

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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.