Home / 285,956.70-394,616.57-155,132.43

Finding the Fourth Proportional to 285,956.70, 394,616.57 and 155,132.43

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Solution

The fourth proportional to 285,956.70, 394,616.57 and 155,132.43 is: 214,080.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,956.70 : 394,616.57 = 155,132.43 : x
  2. Step 2: Convert to fraction form
    285,956.70/394,616.57 = 155,132.43/x
  3. Step 3: Cross multiply
    285,956.70x = 394,616.57 × 155,132.43
  4. Step 4: Simplify right side
    285,956.70x = 61,217,825,837.11
  5. Step 5: Solve for x
    x = 61,217,825,837.11/285,956.70
  6. Step 6: Final answer
    x = 214,080.76

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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.