Home / 285,604.48-394,144.68-172,405.36

Finding the Fourth Proportional to 285,604.48, 394,144.68 and 172,405.36

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Solution

The fourth proportional to 285,604.48, 394,144.68 and 172,405.36 is: 237,925.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,604.48 : 394,144.68 = 172,405.36 : x
  2. Step 2: Convert to fraction form
    285,604.48/394,144.68 = 172,405.36/x
  3. Step 3: Cross multiply
    285,604.48x = 394,144.68 × 172,405.36
  4. Step 4: Simplify right side
    285,604.48x = 67,952,655,447.48
  5. Step 5: Solve for x
    x = 67,952,655,447.48/285,604.48
  6. Step 6: Final answer
    x = 237,925.73

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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.