Home / 259,867.42-389,814.99-82,388.32

Finding the Fourth Proportional to 259,867.42, 389,814.99 and 82,388.32

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Solution

The fourth proportional to 259,867.42, 389,814.99 and 82,388.32 is: 123,586.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,867.42 : 389,814.99 = 82,388.32 : x
  2. Step 2: Convert to fraction form
    259,867.42/389,814.99 = 82,388.32/x
  3. Step 3: Cross multiply
    259,867.42x = 389,814.99 × 82,388.32
  4. Step 4: Simplify right side
    259,867.42x = 32,116,202,136.92
  5. Step 5: Solve for x
    x = 32,116,202,136.92/259,867.42
  6. Step 6: Final answer
    x = 123,586.87

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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.