Home / 285,985.88-394,671.06-172,786.76

Finding the Fourth Proportional to 285,985.88, 394,671.06 and 172,786.76

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Solution

The fourth proportional to 285,985.88, 394,671.06 and 172,786.76 is: 238,452.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,985.88 : 394,671.06 = 172,786.76 : x
  2. Step 2: Convert to fraction form
    285,985.88/394,671.06 = 172,786.76/x
  3. Step 3: Cross multiply
    285,985.88x = 394,671.06 × 172,786.76
  4. Step 4: Simplify right side
    285,985.88x = 68,193,933,723.17
  5. Step 5: Solve for x
    x = 68,193,933,723.17/285,985.88
  6. Step 6: Final answer
    x = 238,452.10

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1.5x scale

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.