Home / 259,404.75-389,119.07-79,477.29

Finding the Fourth Proportional to 259,404.75, 389,119.07 and 79,477.29

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Solution

The fourth proportional to 259,404.75, 389,119.07 and 79,477.29 is: 119,219.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,404.75 : 389,119.07 = 79,477.29 : x
  2. Step 2: Convert to fraction form
    259,404.75/389,119.07 = 79,477.29/x
  3. Step 3: Cross multiply
    259,404.75x = 389,119.07 × 79,477.29
  4. Step 4: Simplify right side
    259,404.75x = 30,926,128,773.53
  5. Step 5: Solve for x
    x = 30,926,128,773.53/259,404.75
  6. Step 6: Final answer
    x = 119,219.59

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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.