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Finding the Fourth Proportional to 256,490.43, 384,760.25 and 66,954.08

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Solution

The fourth proportional to 256,490.43, 384,760.25 and 66,954.08 is: 100,437.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,490.43 : 384,760.25 = 66,954.08 : x
  2. Step 2: Convert to fraction form
    256,490.43/384,760.25 = 66,954.08/x
  3. Step 3: Cross multiply
    256,490.43x = 384,760.25 × 66,954.08
  4. Step 4: Simplify right side
    256,490.43x = 25,761,266,300.75
  5. Step 5: Solve for x
    x = 25,761,266,300.75/256,490.43
  6. Step 6: Final answer
    x = 100,437.53

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