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Finding the Fourth Proportional to 231,438.80, 347,071.80 and 161,109.20

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Solution

The fourth proportional to 231,438.80, 347,071.80 and 161,109.20 is: 241,603.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,438.80 : 347,071.80 = 161,109.20 : x
  2. Step 2: Convert to fraction form
    231,438.80/347,071.80 = 161,109.20/x
  3. Step 3: Cross multiply
    231,438.80x = 347,071.80 × 161,109.20
  4. Step 4: Simplify right side
    231,438.80x = 55,916,460,040.56
  5. Step 5: Solve for x
    x = 55,916,460,040.56/231,438.80
  6. Step 6: Final answer
    x = 241,603.66

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