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Finding the Fourth Proportional to 285,739.44, 394,046.88 and 170,998.56

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Solution

The fourth proportional to 285,739.44, 394,046.88 and 170,998.56 is: 235,814.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,739.44 : 394,046.88 = 170,998.56 : x
  2. Step 2: Convert to fraction form
    285,739.44/394,046.88 = 170,998.56/x
  3. Step 3: Cross multiply
    285,739.44x = 394,046.88 × 170,998.56
  4. Step 4: Simplify right side
    285,739.44x = 67,381,449,052.49
  5. Step 5: Solve for x
    x = 67,381,449,052.49/285,739.44
  6. Step 6: Final answer
    x = 235,814.31

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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.