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Finding the Fourth Proportional to 312,747.54, 431,584.64 and 176,763.40

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Solution

The fourth proportional to 312,747.54, 431,584.64 and 176,763.40 is: 243,929.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,747.54 : 431,584.64 = 176,763.40 : x
  2. Step 2: Convert to fraction form
    312,747.54/431,584.64 = 176,763.40/x
  3. Step 3: Cross multiply
    312,747.54x = 431,584.64 × 176,763.40
  4. Step 4: Simplify right side
    312,747.54x = 76,288,368,354.18
  5. Step 5: Solve for x
    x = 76,288,368,354.18/312,747.54
  6. Step 6: Final answer
    x = 243,929.56

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