Home / 285,724.80-394,329.60-172,540.80

Finding the Fourth Proportional to 285,724.80, 394,329.60 and 172,540.80

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Solution

The fourth proportional to 285,724.80, 394,329.60 and 172,540.80 is: 238,124.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,724.80 : 394,329.60 = 172,540.80 : x
  2. Step 2: Convert to fraction form
    285,724.80/394,329.60 = 172,540.80/x
  3. Step 3: Cross multiply
    285,724.80x = 394,329.60 × 172,540.80
  4. Step 4: Simplify right side
    285,724.80x = 68,037,944,647.68
  5. Step 5: Solve for x
    x = 68,037,944,647.68/285,724.80
  6. Step 6: Final answer
    x = 238,124.04

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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.