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Finding the Fourth Proportional to 231,481.89, 347,223.71 and 81,640.80

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Solution

The fourth proportional to 231,481.89, 347,223.71 and 81,640.80 is: 122,461.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,481.89 : 347,223.71 = 81,640.80 : x
  2. Step 2: Convert to fraction form
    231,481.89/347,223.71 = 81,640.80/x
  3. Step 3: Cross multiply
    231,481.89x = 347,223.71 × 81,640.80
  4. Step 4: Simplify right side
    231,481.89x = 28,347,621,463.37
  5. Step 5: Solve for x
    x = 28,347,621,463.37/231,481.89
  6. Step 6: Final answer
    x = 122,461.51

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