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Finding the Fourth Proportional to 220,890.40, 331,390.80 and 71,144.80

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Solution

The fourth proportional to 220,890.40, 331,390.80 and 71,144.80 is: 106,734.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,890.40 : 331,390.80 = 71,144.80 : x
  2. Step 2: Convert to fraction form
    220,890.40/331,390.80 = 71,144.80/x
  3. Step 3: Cross multiply
    220,890.40x = 331,390.80 × 71,144.80
  4. Step 4: Simplify right side
    220,890.40x = 23,576,732,187.84
  5. Step 5: Solve for x
    x = 23,576,732,187.84/220,890.40
  6. Step 6: Final answer
    x = 106,734.98

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