Home / 263,105.92-394,663.74-85,612.24

Finding the Fourth Proportional to 263,105.92, 394,663.74 and 85,612.24

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Solution

The fourth proportional to 263,105.92, 394,663.74 and 85,612.24 is: 128,419.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,105.92 : 394,663.74 = 85,612.24 : x
  2. Step 2: Convert to fraction form
    263,105.92/394,663.74 = 85,612.24/x
  3. Step 3: Cross multiply
    263,105.92x = 394,663.74 × 85,612.24
  4. Step 4: Simplify right side
    263,105.92x = 33,788,046,828.18
  5. Step 5: Solve for x
    x = 33,788,046,828.18/263,105.92
  6. Step 6: Final answer
    x = 128,419.94

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1.5x scale

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.