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Finding the Fourth Proportional to 253,682.01, 380,480.49 and 85,183.38

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Solution

The fourth proportional to 253,682.01, 380,480.49 and 85,183.38 is: 127,760.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,682.01 : 380,480.49 = 85,183.38 : x
  2. Step 2: Convert to fraction form
    253,682.01/380,480.49 = 85,183.38/x
  3. Step 3: Cross multiply
    253,682.01x = 380,480.49 × 85,183.38
  4. Step 4: Simplify right side
    253,682.01x = 32,410,614,162.26
  5. Step 5: Solve for x
    x = 32,410,614,162.26/253,682.01
  6. Step 6: Final answer
    x = 127,760.79

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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.