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Finding the Fourth Proportional to 212,940.27, 319,631.94 and 156,843.72

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Solution

The fourth proportional to 212,940.27, 319,631.94 and 156,843.72 is: 235,428.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,940.27 : 319,631.94 = 156,843.72 : x
  2. Step 2: Convert to fraction form
    212,940.27/319,631.94 = 156,843.72/x
  3. Step 3: Cross multiply
    212,940.27x = 319,631.94 × 156,843.72
  4. Step 4: Simplify right side
    212,940.27x = 50,132,262,500.42
  5. Step 5: Solve for x
    x = 50,132,262,500.42/212,940.27
  6. Step 6: Final answer
    x = 235,428.75

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