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Finding the Fourth Proportional to 225,616.80, 338,425.20 and 204,880.80

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Solution

The fourth proportional to 225,616.80, 338,425.20 and 204,880.80 is: 307,321.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,616.80 : 338,425.20 = 204,880.80 : x
  2. Step 2: Convert to fraction form
    225,616.80/338,425.20 = 204,880.80/x
  3. Step 3: Cross multiply
    225,616.80x = 338,425.20 × 204,880.80
  4. Step 4: Simplify right side
    225,616.80x = 69,336,825,716.16
  5. Step 5: Solve for x
    x = 69,336,825,716.16/225,616.80
  6. Step 6: Final answer
    x = 307,321.20

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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.