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Finding the Fourth Proportional to 262,960.50, 394,243.92 and 85,361.52

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Solution

The fourth proportional to 262,960.50, 394,243.92 and 85,361.52 is: 127,978.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,960.50 : 394,243.92 = 85,361.52 : x
  2. Step 2: Convert to fraction form
    262,960.50/394,243.92 = 85,361.52/x
  3. Step 3: Cross multiply
    262,960.50x = 394,243.92 × 85,361.52
  4. Step 4: Simplify right side
    262,960.50x = 33,653,260,261.96
  5. Step 5: Solve for x
    x = 33,653,260,261.96/262,960.50
  6. Step 6: Final answer
    x = 127,978.39

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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.