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Finding the Fourth Proportional to 262,739.48, 394,164.57 and 85,232.63

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Solution

The fourth proportional to 262,739.48, 394,164.57 and 85,232.63 is: 127,866.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,739.48 : 394,164.57 = 85,232.63 : x
  2. Step 2: Convert to fraction form
    262,739.48/394,164.57 = 85,232.63/x
  3. Step 3: Cross multiply
    262,739.48x = 394,164.57 × 85,232.63
  4. Step 4: Simplify right side
    262,739.48x = 33,595,682,953.92
  5. Step 5: Solve for x
    x = 33,595,682,953.92/262,739.48
  6. Step 6: Final answer
    x = 127,866.90

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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.