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Finding the Fourth Proportional to 256,493.76, 384,759.97 and 76,564.97

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Solution

The fourth proportional to 256,493.76, 384,759.97 and 76,564.97 is: 114,853.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,493.76 : 384,759.97 = 76,564.97 : x
  2. Step 2: Convert to fraction form
    256,493.76/384,759.97 = 76,564.97/x
  3. Step 3: Cross multiply
    256,493.76x = 384,759.97 × 76,564.97
  4. Step 4: Simplify right side
    256,493.76x = 29,459,135,560.25
  5. Step 5: Solve for x
    x = 29,459,135,560.25/256,493.76
  6. Step 6: Final answer
    x = 114,853.23

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