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Finding the Fourth Proportional to 397,724.28, 548,859.60 and 218,876.28

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Solution

The fourth proportional to 397,724.28, 548,859.60 and 218,876.28 is: 302,049.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,724.28 : 548,859.60 = 218,876.28 : x
  2. Step 2: Convert to fraction form
    397,724.28/548,859.60 = 218,876.28/x
  3. Step 3: Cross multiply
    397,724.28x = 548,859.60 × 218,876.28
  4. Step 4: Simplify right side
    397,724.28x = 120,132,347,490.29
  5. Step 5: Solve for x
    x = 120,132,347,490.29/397,724.28
  6. Step 6: Final answer
    x = 302,049.32

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