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Finding the Fourth Proportional to 287,865.56, 397,177.56 and 276,515.04

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Solution

The fourth proportional to 287,865.56, 397,177.56 and 276,515.04 is: 381,516.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,865.56 : 397,177.56 = 276,515.04 : x
  2. Step 2: Convert to fraction form
    287,865.56/397,177.56 = 276,515.04/x
  3. Step 3: Cross multiply
    287,865.56x = 397,177.56 × 276,515.04
  4. Step 4: Simplify right side
    287,865.56x = 109,825,568,890.50
  5. Step 5: Solve for x
    x = 109,825,568,890.50/287,865.56
  6. Step 6: Final answer
    x = 381,516.88

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