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Finding the Fourth Proportional to 285,992.46, 394,669.62 and 158,668.97

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Solution

The fourth proportional to 285,992.46, 394,669.62 and 158,668.97 is: 218,963.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,992.46 : 394,669.62 = 158,668.97 : x
  2. Step 2: Convert to fraction form
    285,992.46/394,669.62 = 158,668.97/x
  3. Step 3: Cross multiply
    285,992.46x = 394,669.62 × 158,668.97
  4. Step 4: Simplify right side
    285,992.46x = 62,621,820,122.34
  5. Step 5: Solve for x
    x = 62,621,820,122.34/285,992.46
  6. Step 6: Final answer
    x = 218,963.19

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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.