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Finding the Fourth Proportional to 263,244.74, 394,866.81 and 85,751.47

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Solution

The fourth proportional to 263,244.74, 394,866.81 and 85,751.47 is: 128,627.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,244.74 : 394,866.81 = 85,751.47 : x
  2. Step 2: Convert to fraction form
    263,244.74/394,866.81 = 85,751.47/x
  3. Step 3: Cross multiply
    263,244.74x = 394,866.81 × 85,751.47
  4. Step 4: Simplify right side
    263,244.74x = 33,860,408,424.54
  5. Step 5: Solve for x
    x = 33,860,408,424.54/263,244.74
  6. Step 6: Final answer
    x = 128,627.10

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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.