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Finding the Fourth Proportional to 269,440.40, 404,160.60 and 91,920.80

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Solution

The fourth proportional to 269,440.40, 404,160.60 and 91,920.80 is: 137,881.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,440.40 : 404,160.60 = 91,920.80 : x
  2. Step 2: Convert to fraction form
    269,440.40/404,160.60 = 91,920.80/x
  3. Step 3: Cross multiply
    269,440.40x = 404,160.60 × 91,920.80
  4. Step 4: Simplify right side
    269,440.40x = 37,150,765,680.48
  5. Step 5: Solve for x
    x = 37,150,765,680.48/269,440.40
  6. Step 6: Final answer
    x = 137,881.20

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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.