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Finding the Fourth Proportional to 220,080.31, 303,712.07 and 129,440.09

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Solution

The fourth proportional to 220,080.31, 303,712.07 and 129,440.09 is: 178,628.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,080.31 : 303,712.07 = 129,440.09 : x
  2. Step 2: Convert to fraction form
    220,080.31/303,712.07 = 129,440.09/x
  3. Step 3: Cross multiply
    220,080.31x = 303,712.07 × 129,440.09
  4. Step 4: Simplify right side
    220,080.31x = 39,312,517,786.97
  5. Step 5: Solve for x
    x = 39,312,517,786.97/220,080.31
  6. Step 6: Final answer
    x = 178,628.06

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