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Finding the Fourth Proportional to 269,075.20, 403,612.80 and 82,086.40

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Solution

The fourth proportional to 269,075.20, 403,612.80 and 82,086.40 is: 123,129.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,075.20 : 403,612.80 = 82,086.40 : x
  2. Step 2: Convert to fraction form
    269,075.20/403,612.80 = 82,086.40/x
  3. Step 3: Cross multiply
    269,075.20x = 403,612.80 × 82,086.40
  4. Step 4: Simplify right side
    269,075.20x = 33,131,121,745.92
  5. Step 5: Solve for x
    x = 33,131,121,745.92/269,075.20
  6. Step 6: Final answer
    x = 123,129.60

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