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Finding the Fourth Proportional to 285,551.46, 394,063.70 and 158,229.81

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Solution

The fourth proportional to 285,551.46, 394,063.70 and 158,229.81 is: 218,358.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,551.46 : 394,063.70 = 158,229.81 : x
  2. Step 2: Convert to fraction form
    285,551.46/394,063.70 = 158,229.81/x
  3. Step 3: Cross multiply
    285,551.46x = 394,063.70 × 158,229.81
  4. Step 4: Simplify right side
    285,551.46x = 62,352,623,587.75
  5. Step 5: Solve for x
    x = 62,352,623,587.75/285,551.46
  6. Step 6: Final answer
    x = 218,358.62

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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.