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Finding the Fourth Proportional to 256,805.52, 385,290.30 and 123,699.24

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Solution

The fourth proportional to 256,805.52, 385,290.30 and 123,699.24 is: 185,588.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,805.52 : 385,290.30 = 123,699.24 : x
  2. Step 2: Convert to fraction form
    256,805.52/385,290.30 = 123,699.24/x
  3. Step 3: Cross multiply
    256,805.52x = 385,290.30 × 123,699.24
  4. Step 4: Simplify right side
    256,805.52x = 47,660,117,289.37
  5. Step 5: Solve for x
    x = 47,660,117,289.37/256,805.52
  6. Step 6: Final answer
    x = 185,588.37

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