Home / 259,739.75-389,648.58-91,230.38

Finding the Fourth Proportional to 259,739.75, 389,648.58 and 91,230.38

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Solution

The fourth proportional to 259,739.75, 389,648.58 and 91,230.38 is: 136,859.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,739.75 : 389,648.58 = 91,230.38 : x
  2. Step 2: Convert to fraction form
    259,739.75/389,648.58 = 91,230.38/x
  3. Step 3: Cross multiply
    259,739.75x = 389,648.58 × 91,230.38
  4. Step 4: Simplify right side
    259,739.75x = 35,547,786,071.62
  5. Step 5: Solve for x
    x = 35,547,786,071.62/259,739.75
  6. Step 6: Final answer
    x = 136,859.25

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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.