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Finding the Fourth Proportional to 231,428.82, 347,340.48 and 91,285.86

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Solution

The fourth proportional to 231,428.82, 347,340.48 and 91,285.86 is: 137,006.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,428.82 : 347,340.48 = 91,285.86 : x
  2. Step 2: Convert to fraction form
    231,428.82/347,340.48 = 91,285.86/x
  3. Step 3: Cross multiply
    231,428.82x = 347,340.48 × 91,285.86
  4. Step 4: Simplify right side
    231,428.82x = 31,707,274,429.61
  5. Step 5: Solve for x
    x = 31,707,274,429.61/231,428.82
  6. Step 6: Final answer
    x = 137,006.59

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