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Finding the Fourth Proportional to 280,198.72, 386,658.39 and 159,369.40

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Solution

The fourth proportional to 280,198.72, 386,658.39 and 159,369.40 is: 219,920.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,198.72 : 386,658.39 = 159,369.40 : x
  2. Step 2: Convert to fraction form
    280,198.72/386,658.39 = 159,369.40/x
  3. Step 3: Cross multiply
    280,198.72x = 386,658.39 × 159,369.40
  4. Step 4: Simplify right side
    280,198.72x = 61,621,515,619.27
  5. Step 5: Solve for x
    x = 61,621,515,619.27/280,198.72
  6. Step 6: Final answer
    x = 219,920.76

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