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Finding the Fourth Proportional to 397,802, 548,966.78 and 218,954

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Solution

The fourth proportional to 397,802, 548,966.78 and 218,954 is: 302,156.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,802 : 548,966.78 = 218,954 : x
  2. Step 2: Convert to fraction form
    397,802/548,966.78 = 218,954/x
  3. Step 3: Cross multiply
    397,802x = 548,966.78 × 218,954
  4. Step 4: Simplify right side
    397,802x = 120,198,472,348.12
  5. Step 5: Solve for x
    x = 120,198,472,348.12/397,802
  6. Step 6: Final answer
    x = 302,156.53

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