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Finding the Fourth Proportional to 394,559.08, 591,871.08 and 128,313.76

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Solution

The fourth proportional to 394,559.08, 591,871.08 and 128,313.76 is: 192,481.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,559.08 : 591,871.08 = 128,313.76 : x
  2. Step 2: Convert to fraction form
    394,559.08/591,871.08 = 128,313.76/x
  3. Step 3: Cross multiply
    394,559.08x = 591,871.08 × 128,313.76
  4. Step 4: Simplify right side
    394,559.08x = 75,945,203,710.06
  5. Step 5: Solve for x
    x = 75,945,203,710.06/394,559.08
  6. Step 6: Final answer
    x = 192,481.20

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