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Finding the Fourth Proportional to 487,604.87, 731,144.32 and 221,220.04

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Solution

The fourth proportional to 487,604.87, 731,144.32 and 221,220.04 is: 331,710.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,604.87 : 731,144.32 = 221,220.04 : x
  2. Step 2: Convert to fraction form
    487,604.87/731,144.32 = 221,220.04/x
  3. Step 3: Cross multiply
    487,604.87x = 731,144.32 × 221,220.04
  4. Step 4: Simplify right side
    487,604.87x = 161,743,775,716.17
  5. Step 5: Solve for x
    x = 161,743,775,716.17/487,604.87
  6. Step 6: Final answer
    x = 331,710.75

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