Home / 215,514.87-323,286.89-82,409.19

Finding the Fourth Proportional to 215,514.87, 323,286.89 and 82,409.19

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Solution

The fourth proportional to 215,514.87, 323,286.89 and 82,409.19 is: 123,619.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,514.87 : 323,286.89 = 82,409.19 : x
  2. Step 2: Convert to fraction form
    215,514.87/323,286.89 = 82,409.19/x
  3. Step 3: Cross multiply
    215,514.87x = 323,286.89 × 82,409.19
  4. Step 4: Simplify right side
    215,514.87x = 26,641,810,330.47
  5. Step 5: Solve for x
    x = 26,641,810,330.47/215,514.87
  6. Step 6: Final answer
    x = 123,619.36

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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.