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Finding the Fourth Proportional to 269,871.20, 404,461.20 and 207,231.20

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Solution

The fourth proportional to 269,871.20, 404,461.20 and 207,231.20 is: 310,581.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,871.20 : 404,461.20 = 207,231.20 : x
  2. Step 2: Convert to fraction form
    269,871.20/404,461.20 = 207,231.20/x
  3. Step 3: Cross multiply
    269,871.20x = 404,461.20 × 207,231.20
  4. Step 4: Simplify right side
    269,871.20x = 83,816,979,829.44
  5. Step 5: Solve for x
    x = 83,816,979,829.44/269,871.20
  6. Step 6: Final answer
    x = 310,581.42

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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.