Home / 285,814.10-394,439.20-158,486.96

Finding the Fourth Proportional to 285,814.10, 394,439.20 and 158,486.96

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Solution

The fourth proportional to 285,814.10, 394,439.20 and 158,486.96 is: 218,720.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,814.10 : 394,439.20 = 158,486.96 : x
  2. Step 2: Convert to fraction form
    285,814.10/394,439.20 = 158,486.96/x
  3. Step 3: Cross multiply
    285,814.10x = 394,439.20 × 158,486.96
  4. Step 4: Simplify right side
    285,814.10x = 62,513,469,712.83
  5. Step 5: Solve for x
    x = 62,513,469,712.83/285,814.10
  6. Step 6: Final answer
    x = 218,720.73

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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.