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Finding the Fourth Proportional to 269,619.70, 404,429.55 and 218,881.30

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Solution

The fourth proportional to 269,619.70, 404,429.55 and 218,881.30 is: 328,321.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,619.70 : 404,429.55 = 218,881.30 : x
  2. Step 2: Convert to fraction form
    269,619.70/404,429.55 = 218,881.30/x
  3. Step 3: Cross multiply
    269,619.70x = 404,429.55 × 218,881.30
  4. Step 4: Simplify right side
    269,619.70x = 88,522,065,662.42
  5. Step 5: Solve for x
    x = 88,522,065,662.42/269,619.70
  6. Step 6: Final answer
    x = 328,321.95

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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.