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Finding the Fourth Proportional to 225,685.80, 311,304.78 and 145,217.88

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Solution

The fourth proportional to 225,685.80, 311,304.78 and 145,217.88 is: 200,309.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,685.80 : 311,304.78 = 145,217.88 : x
  2. Step 2: Convert to fraction form
    225,685.80/311,304.78 = 145,217.88/x
  3. Step 3: Cross multiply
    225,685.80x = 311,304.78 × 145,217.88
  4. Step 4: Simplify right side
    225,685.80x = 45,207,020,185.47
  5. Step 5: Solve for x
    x = 45,207,020,185.47/225,685.80
  6. Step 6: Final answer
    x = 200,309.55

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