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Finding the Fourth Proportional to 269,648.80, 404,473.20 and 136,938.40

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Solution

The fourth proportional to 269,648.80, 404,473.20 and 136,938.40 is: 205,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,648.80 : 404,473.20 = 136,938.40 : x
  2. Step 2: Convert to fraction form
    269,648.80/404,473.20 = 136,938.40/x
  3. Step 3: Cross multiply
    269,648.80x = 404,473.20 × 136,938.40
  4. Step 4: Simplify right side
    269,648.80x = 55,387,912,850.88
  5. Step 5: Solve for x
    x = 55,387,912,850.88/269,648.80
  6. Step 6: Final answer
    x = 205,407.60

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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.