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Finding the Fourth Proportional to 275,540.40, 412,921.80 and 134,989.20

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Solution

The fourth proportional to 275,540.40, 412,921.80 and 134,989.20 is: 202,293.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,540.40 : 412,921.80 = 134,989.20 : x
  2. Step 2: Convert to fraction form
    275,540.40/412,921.80 = 134,989.20/x
  3. Step 3: Cross multiply
    275,540.40x = 412,921.80 × 134,989.20
  4. Step 4: Simplify right side
    275,540.40x = 55,739,983,444.56
  5. Step 5: Solve for x
    x = 55,739,983,444.56/275,540.40
  6. Step 6: Final answer
    x = 202,293.32

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