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Finding the Fourth Proportional to 208,280.47, 312,356.12 and 75,143.42

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Solution

The fourth proportional to 208,280.47, 312,356.12 and 75,143.42 is: 112,691.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,280.47 : 312,356.12 = 75,143.42 : x
  2. Step 2: Convert to fraction form
    208,280.47/312,356.12 = 75,143.42/x
  3. Step 3: Cross multiply
    208,280.47x = 312,356.12 × 75,143.42
  4. Step 4: Simplify right side
    208,280.47x = 23,471,507,114.73
  5. Step 5: Solve for x
    x = 23,471,507,114.73/208,280.47
  6. Step 6: Final answer
    x = 112,691.83

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