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Finding the Fourth Proportional to 268,272.40, 401,947.80 and 127,728.40

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Solution

The fourth proportional to 268,272.40, 401,947.80 and 127,728.40 is: 191,373.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,272.40 : 401,947.80 = 127,728.40 : x
  2. Step 2: Convert to fraction form
    268,272.40/401,947.80 = 127,728.40/x
  3. Step 3: Cross multiply
    268,272.40x = 401,947.80 × 127,728.40
  4. Step 4: Simplify right side
    268,272.40x = 51,340,149,377.52
  5. Step 5: Solve for x
    x = 51,340,149,377.52/268,272.40
  6. Step 6: Final answer
    x = 191,373.21

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