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Finding the Fourth Proportional to 285,534.30, 394,229.79 and 255,222.48

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Solution

The fourth proportional to 285,534.30, 394,229.79 and 255,222.48 is: 352,379.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,534.30 : 394,229.79 = 255,222.48 : x
  2. Step 2: Convert to fraction form
    285,534.30/394,229.79 = 255,222.48/x
  3. Step 3: Cross multiply
    285,534.30x = 394,229.79 × 255,222.48
  4. Step 4: Simplify right side
    285,534.30x = 100,616,304,693.68
  5. Step 5: Solve for x
    x = 100,616,304,693.68/285,534.30
  6. Step 6: Final answer
    x = 352,379.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.