Home / 285,819.60-394,405.20-158,494.80

Finding the Fourth Proportional to 285,819.60, 394,405.20 and 158,494.80

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Solution

The fourth proportional to 285,819.60, 394,405.20 and 158,494.80 is: 218,708.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,819.60 : 394,405.20 = 158,494.80 : x
  2. Step 2: Convert to fraction form
    285,819.60/394,405.20 = 158,494.80/x
  3. Step 3: Cross multiply
    285,819.60x = 394,405.20 × 158,494.80
  4. Step 4: Simplify right side
    285,819.60x = 62,511,173,292.96
  5. Step 5: Solve for x
    x = 62,511,173,292.96/285,819.60
  6. Step 6: Final answer
    x = 218,708.49

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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.