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Finding the Fourth Proportional to 285,653.66, 394,215.46 and 158,331.38

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Solution

The fourth proportional to 285,653.66, 394,215.46 and 158,331.38 is: 218,504.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,653.66 : 394,215.46 = 158,331.38 : x
  2. Step 2: Convert to fraction form
    285,653.66/394,215.46 = 158,331.38/x
  3. Step 3: Cross multiply
    285,653.66x = 394,215.46 × 158,331.38
  4. Step 4: Simplify right side
    285,653.66x = 62,416,675,432.23
  5. Step 5: Solve for x
    x = 62,416,675,432.23/285,653.66
  6. Step 6: Final answer
    x = 218,504.73

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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.