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Finding the Fourth Proportional to 266,109.20, 399,163.80 and 252,987.20

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Solution

The fourth proportional to 266,109.20, 399,163.80 and 252,987.20 is: 379,480.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,109.20 : 399,163.80 = 252,987.20 : x
  2. Step 2: Convert to fraction form
    266,109.20/399,163.80 = 252,987.20/x
  3. Step 3: Cross multiply
    266,109.20x = 399,163.80 × 252,987.20
  4. Step 4: Simplify right side
    266,109.20x = 100,983,332,103.36
  5. Step 5: Solve for x
    x = 100,983,332,103.36/266,109.20
  6. Step 6: Final answer
    x = 379,480.80

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