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Finding the Fourth Proportional to 414.18, 620.84 and 140.04

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Solution

The fourth proportional to 414.18, 620.84 and 140.04 is: 209.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.18 : 620.84 = 140.04 : x
  2. Step 2: Convert to fraction form
    414.18/620.84 = 140.04/x
  3. Step 3: Cross multiply
    414.18x = 620.84 × 140.04
  4. Step 4: Simplify right side
    414.18x = 86,942.78
  5. Step 5: Solve for x
    x = 86,942.78/414.18
  6. Step 6: Final answer
    x = 209.92

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