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Finding the Fourth Proportional to 312,449.72, 431,178.33 and 169,206.44

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Solution

The fourth proportional to 312,449.72, 431,178.33 and 169,206.44 is: 233,503.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,449.72 : 431,178.33 = 169,206.44 : x
  2. Step 2: Convert to fraction form
    312,449.72/431,178.33 = 169,206.44/x
  3. Step 3: Cross multiply
    312,449.72x = 431,178.33 × 169,206.44
  4. Step 4: Simplify right side
    312,449.72x = 72,958,150,224.45
  5. Step 5: Solve for x
    x = 72,958,150,224.45/312,449.72
  6. Step 6: Final answer
    x = 233,503.65

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