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Finding the Fourth Proportional to 204,757.39, 282,739.67 and 128,404.90

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Solution

The fourth proportional to 204,757.39, 282,739.67 and 128,404.90 is: 177,308.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,757.39 : 282,739.67 = 128,404.90 : x
  2. Step 2: Convert to fraction form
    204,757.39/282,739.67 = 128,404.90/x
  3. Step 3: Cross multiply
    204,757.39x = 282,739.67 × 128,404.90
  4. Step 4: Simplify right side
    204,757.39x = 36,305,158,185.03
  5. Step 5: Solve for x
    x = 36,305,158,185.03/204,757.39
  6. Step 6: Final answer
    x = 177,308.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.