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Finding the Fourth Proportional to 312,495.80, 431,244.90 and 169,255.88

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Solution

The fourth proportional to 312,495.80, 431,244.90 and 169,255.88 is: 233,573.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,495.80 : 431,244.90 = 169,255.88 : x
  2. Step 2: Convert to fraction form
    312,495.80/431,244.90 = 169,255.88/x
  3. Step 3: Cross multiply
    312,495.80x = 431,244.90 × 169,255.88
  4. Step 4: Simplify right side
    312,495.80x = 72,990,732,888.79
  5. Step 5: Solve for x
    x = 72,990,732,888.79/312,495.80
  6. Step 6: Final answer
    x = 233,573.48

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