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Finding the Fourth Proportional to 230,733.18, 318,411.20 and 128,757.56

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Solution

The fourth proportional to 230,733.18, 318,411.20 and 128,757.56 is: 177,685.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,733.18 : 318,411.20 = 128,757.56 : x
  2. Step 2: Convert to fraction form
    230,733.18/318,411.20 = 128,757.56/x
  3. Step 3: Cross multiply
    230,733.18x = 318,411.20 × 128,757.56
  4. Step 4: Simplify right side
    230,733.18x = 40,997,846,952.83
  5. Step 5: Solve for x
    x = 40,997,846,952.83/230,733.18
  6. Step 6: Final answer
    x = 177,685.09

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