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Finding the Fourth Proportional to 285,571.69, 394,091.28 and 158,249.41

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Solution

The fourth proportional to 285,571.69, 394,091.28 and 158,249.41 is: 218,385.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,571.69 : 394,091.28 = 158,249.41 : x
  2. Step 2: Convert to fraction form
    285,571.69/394,091.28 = 158,249.41/x
  3. Step 3: Cross multiply
    285,571.69x = 394,091.28 × 158,249.41
  4. Step 4: Simplify right side
    285,571.69x = 62,364,712,546.14
  5. Step 5: Solve for x
    x = 62,364,712,546.14/285,571.69
  6. Step 6: Final answer
    x = 218,385.49

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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.