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Finding the Fourth Proportional to 402.09, 601.89 and 219.03

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Solution

The fourth proportional to 402.09, 601.89 and 219.03 is: 327.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.09 : 601.89 = 219.03 : x
  2. Step 2: Convert to fraction form
    402.09/601.89 = 219.03/x
  3. Step 3: Cross multiply
    402.09x = 601.89 × 219.03
  4. Step 4: Simplify right side
    402.09x = 131,831.97
  5. Step 5: Solve for x
    x = 131,831.97/402.09
  6. Step 6: Final answer
    x = 327.87

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