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Finding the Fourth Proportional to 269,679.20, 404,421.60 and 136,515.20

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Solution

The fourth proportional to 269,679.20, 404,421.60 and 136,515.20 is: 204,723.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,679.20 : 404,421.60 = 136,515.20 : x
  2. Step 2: Convert to fraction form
    269,679.20/404,421.60 = 136,515.20/x
  3. Step 3: Cross multiply
    269,679.20x = 404,421.60 × 136,515.20
  4. Step 4: Simplify right side
    269,679.20x = 55,209,695,608.32
  5. Step 5: Solve for x
    x = 55,209,695,608.32/269,679.20
  6. Step 6: Final answer
    x = 204,723.60

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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.