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Finding the Fourth Proportional to 312,640.44, 431,442.50 and 169,401.06

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Solution

The fourth proportional to 312,640.44, 431,442.50 and 169,401.06 is: 233,772.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,640.44 : 431,442.50 = 169,401.06 : x
  2. Step 2: Convert to fraction form
    312,640.44/431,442.50 = 169,401.06/x
  3. Step 3: Cross multiply
    312,640.44x = 431,442.50 × 169,401.06
  4. Step 4: Simplify right side
    312,640.44x = 73,086,815,982.04
  5. Step 5: Solve for x
    x = 73,086,815,982.04/312,640.44
  6. Step 6: Final answer
    x = 233,772.75

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