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Finding the Fourth Proportional to 312,231.80, 430,881.06 and 168,991.88

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Solution

The fourth proportional to 312,231.80, 430,881.06 and 168,991.88 is: 233,209.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,231.80 : 430,881.06 = 168,991.88 : x
  2. Step 2: Convert to fraction form
    312,231.80/430,881.06 = 168,991.88/x
  3. Step 3: Cross multiply
    312,231.80x = 430,881.06 × 168,991.88
  4. Step 4: Simplify right side
    312,231.80x = 72,815,400,385.79
  5. Step 5: Solve for x
    x = 72,815,400,385.79/312,231.80
  6. Step 6: Final answer
    x = 233,209.43

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