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Finding the Fourth Proportional to 312,731.28, 431,567.46 and 169,489.80

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Solution

The fourth proportional to 312,731.28, 431,567.46 and 169,489.80 is: 233,895.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,731.28 : 431,567.46 = 169,489.80 : x
  2. Step 2: Convert to fraction form
    312,731.28/431,567.46 = 169,489.80/x
  3. Step 3: Cross multiply
    312,731.28x = 431,567.46 × 169,489.80
  4. Step 4: Simplify right side
    312,731.28x = 73,146,282,481.91
  5. Step 5: Solve for x
    x = 73,146,282,481.91/312,731.28
  6. Step 6: Final answer
    x = 233,895.00

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