Home / 263,815.07-395,759.48-86,286.69

Finding the Fourth Proportional to 263,815.07, 395,759.48 and 86,286.69

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Solution

The fourth proportional to 263,815.07, 395,759.48 and 86,286.69 is: 129,442.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,815.07 : 395,759.48 = 86,286.69 : x
  2. Step 2: Convert to fraction form
    263,815.07/395,759.48 = 86,286.69/x
  3. Step 3: Cross multiply
    263,815.07x = 395,759.48 × 86,286.69
  4. Step 4: Simplify right side
    263,815.07x = 34,148,775,133.89
  5. Step 5: Solve for x
    x = 34,148,775,133.89/263,815.07
  6. Step 6: Final answer
    x = 129,442.10

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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.