Home / 285,974.96-394,679.56-165,145.68

Finding the Fourth Proportional to 285,974.96, 394,679.56 and 165,145.68

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Solution

The fourth proportional to 285,974.96, 394,679.56 and 165,145.68 is: 227,920.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,974.96 : 394,679.56 = 165,145.68 : x
  2. Step 2: Convert to fraction form
    285,974.96/394,679.56 = 165,145.68/x
  3. Step 3: Cross multiply
    285,974.96x = 394,679.56 × 165,145.68
  4. Step 4: Simplify right side
    285,974.96x = 65,179,624,318.30
  5. Step 5: Solve for x
    x = 65,179,624,318.30/285,974.96
  6. Step 6: Final answer
    x = 227,920.74

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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.