Home / 263,272.11-394,908.82-85,792.94

Finding the Fourth Proportional to 263,272.11, 394,908.82 and 85,792.94

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Solution

The fourth proportional to 263,272.11, 394,908.82 and 85,792.94 is: 128,689.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,272.11 : 394,908.82 = 85,792.94 : x
  2. Step 2: Convert to fraction form
    263,272.11/394,908.82 = 85,792.94/x
  3. Step 3: Cross multiply
    263,272.11x = 394,908.82 × 85,792.94
  4. Step 4: Simplify right side
    263,272.11x = 33,880,387,991.61
  5. Step 5: Solve for x
    x = 33,880,387,991.61/263,272.11
  6. Step 6: Final answer
    x = 128,689.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.