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Finding the Fourth Proportional to 325,789.40, 488,659.80 and 136,200.80

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Solution

The fourth proportional to 325,789.40, 488,659.80 and 136,200.80 is: 204,291.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,789.40 : 488,659.80 = 136,200.80 : x
  2. Step 2: Convert to fraction form
    325,789.40/488,659.80 = 136,200.80/x
  3. Step 3: Cross multiply
    325,789.40x = 488,659.80 × 136,200.80
  4. Step 4: Simplify right side
    325,789.40x = 66,555,855,687.84
  5. Step 5: Solve for x
    x = 66,555,855,687.84/325,789.40
  6. Step 6: Final answer
    x = 204,291.04

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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.