Home / 285,631.76-394,144.26-158,304.80

Finding the Fourth Proportional to 285,631.76, 394,144.26 and 158,304.80

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Solution

The fourth proportional to 285,631.76, 394,144.26 and 158,304.80 is: 218,445.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,631.76 : 394,144.26 = 158,304.80 : x
  2. Step 2: Convert to fraction form
    285,631.76/394,144.26 = 158,304.80/x
  3. Step 3: Cross multiply
    285,631.76x = 394,144.26 × 158,304.80
  4. Step 4: Simplify right side
    285,631.76x = 62,394,928,250.45
  5. Step 5: Solve for x
    x = 62,394,928,250.45/285,631.76
  6. Step 6: Final answer
    x = 218,445.34

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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.