Home / 263,261.28-394,642.80-162,121.48

Finding the Fourth Proportional to 263,261.28, 394,642.80 and 162,121.48

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Solution

The fourth proportional to 263,261.28, 394,642.80 and 162,121.48 is: 243,028.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,261.28 : 394,642.80 = 162,121.48 : x
  2. Step 2: Convert to fraction form
    263,261.28/394,642.80 = 162,121.48/x
  3. Step 3: Cross multiply
    263,261.28x = 394,642.80 × 162,121.48
  4. Step 4: Simplify right side
    263,261.28x = 63,980,074,807.34
  5. Step 5: Solve for x
    x = 63,980,074,807.34/263,261.28
  6. Step 6: Final answer
    x = 243,028.81

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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.