Home / 285,821.85-394,408.31-158,497.05

Finding the Fourth Proportional to 285,821.85, 394,408.31 and 158,497.05

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Solution

The fourth proportional to 285,821.85, 394,408.31 and 158,497.05 is: 218,711.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,821.85 : 394,408.31 = 158,497.05 : x
  2. Step 2: Convert to fraction form
    285,821.85/394,408.31 = 158,497.05/x
  3. Step 3: Cross multiply
    285,821.85x = 394,408.31 × 158,497.05
  4. Step 4: Simplify right side
    285,821.85x = 62,512,552,838.00
  5. Step 5: Solve for x
    x = 62,512,552,838.00/285,821.85
  6. Step 6: Final answer
    x = 218,711.60

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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.