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Finding the Fourth Proportional to 256,230.18, 384,345.27 and 129,850.74

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Solution

The fourth proportional to 256,230.18, 384,345.27 and 129,850.74 is: 194,776.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,230.18 : 384,345.27 = 129,850.74 : x
  2. Step 2: Convert to fraction form
    256,230.18/384,345.27 = 129,850.74/x
  3. Step 3: Cross multiply
    256,230.18x = 384,345.27 × 129,850.74
  4. Step 4: Simplify right side
    256,230.18x = 49,907,517,725.00
  5. Step 5: Solve for x
    x = 49,907,517,725.00/256,230.18
  6. Step 6: Final answer
    x = 194,776.11

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