Home / 259,711.93-389,590.11-91,217.59

Finding the Fourth Proportional to 259,711.93, 389,590.11 and 91,217.59

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Solution

The fourth proportional to 259,711.93, 389,590.11 and 91,217.59 is: 136,834.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,711.93 : 389,590.11 = 91,217.59 : x
  2. Step 2: Convert to fraction form
    259,711.93/389,590.11 = 91,217.59/x
  3. Step 3: Cross multiply
    259,711.93x = 389,590.11 × 91,217.59
  4. Step 4: Simplify right side
    259,711.93x = 35,537,470,922.03
  5. Step 5: Solve for x
    x = 35,537,470,922.03/259,711.93
  6. Step 6: Final answer
    x = 136,834.19

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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.