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Finding the Fourth Proportional to 511,172.28, 705,422.43 and 281,737.71

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Solution

The fourth proportional to 511,172.28, 705,422.43 and 281,737.71 is: 388,800.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,172.28 : 705,422.43 = 281,737.71 : x
  2. Step 2: Convert to fraction form
    511,172.28/705,422.43 = 281,737.71/x
  3. Step 3: Cross multiply
    511,172.28x = 705,422.43 × 281,737.71
  4. Step 4: Simplify right side
    511,172.28x = 198,744,100,010.84
  5. Step 5: Solve for x
    x = 198,744,100,010.84/511,172.28
  6. Step 6: Final answer
    x = 388,800.62

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