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Finding the Fourth Proportional to 312,289.11, 468,432.14 and 75,631.79

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Solution

The fourth proportional to 312,289.11, 468,432.14 and 75,631.79 is: 113,447.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,289.11 : 468,432.14 = 75,631.79 : x
  2. Step 2: Convert to fraction form
    312,289.11/468,432.14 = 75,631.79/x
  3. Step 3: Cross multiply
    312,289.11x = 468,432.14 × 75,631.79
  4. Step 4: Simplify right side
    312,289.11x = 35,428,358,521.41
  5. Step 5: Solve for x
    x = 35,428,358,521.41/312,289.11
  6. Step 6: Final answer
    x = 113,447.31

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