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Finding the Fourth Proportional to 206,399.80, 309,303.24 and 88,039.36

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Solution

The fourth proportional to 206,399.80, 309,303.24 and 88,039.36 is: 131,932.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,399.80 : 309,303.24 = 88,039.36 : x
  2. Step 2: Convert to fraction form
    206,399.80/309,303.24 = 88,039.36/x
  3. Step 3: Cross multiply
    206,399.80x = 309,303.24 × 88,039.36
  4. Step 4: Simplify right side
    206,399.80x = 27,230,859,295.53
  5. Step 5: Solve for x
    x = 27,230,859,295.53/206,399.80
  6. Step 6: Final answer
    x = 131,932.59

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