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Finding the Fourth Proportional to 263,259.28, 394,639.80 and 162,119.48

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Solution

The fourth proportional to 263,259.28, 394,639.80 and 162,119.48 is: 243,025.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,259.28 : 394,639.80 = 162,119.48 : x
  2. Step 2: Convert to fraction form
    263,259.28/394,639.80 = 162,119.48/x
  3. Step 3: Cross multiply
    263,259.28x = 394,639.80 × 162,119.48
  4. Step 4: Simplify right side
    263,259.28x = 63,978,799,163.30
  5. Step 5: Solve for x
    x = 63,978,799,163.30/263,259.28
  6. Step 6: Final answer
    x = 243,025.81

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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.