Home / 259,740.75-389,650.08-91,231.38

Finding the Fourth Proportional to 259,740.75, 389,650.08 and 91,231.38

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Solution

The fourth proportional to 259,740.75, 389,650.08 and 91,231.38 is: 136,860.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,740.75 : 389,650.08 = 91,231.38 : x
  2. Step 2: Convert to fraction form
    259,740.75/389,650.08 = 91,231.38/x
  3. Step 3: Cross multiply
    259,740.75x = 389,650.08 × 91,231.38
  4. Step 4: Simplify right side
    259,740.75x = 35,548,314,515.51
  5. Step 5: Solve for x
    x = 35,548,314,515.51/259,740.75
  6. Step 6: Final answer
    x = 136,860.75

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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.