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Finding the Fourth Proportional to 269,708.80, 404,563.20 and 136,998.40

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Solution

The fourth proportional to 269,708.80, 404,563.20 and 136,998.40 is: 205,497.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,708.80 : 404,563.20 = 136,998.40 : x
  2. Step 2: Convert to fraction form
    269,708.80/404,563.20 = 136,998.40/x
  3. Step 3: Cross multiply
    269,708.80x = 404,563.20 × 136,998.40
  4. Step 4: Simplify right side
    269,708.80x = 55,424,511,098.88
  5. Step 5: Solve for x
    x = 55,424,511,098.88/269,708.80
  6. Step 6: Final answer
    x = 205,497.60

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1.5x scale

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.