Home / 213,493.10-319,993.09-80,288.33

Finding the Fourth Proportional to 213,493.10, 319,993.09 and 80,288.33

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Solution

The fourth proportional to 213,493.10, 319,993.09 and 80,288.33 is: 120,339.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,493.10 : 319,993.09 = 80,288.33 : x
  2. Step 2: Convert to fraction form
    213,493.10/319,993.09 = 80,288.33/x
  3. Step 3: Cross multiply
    213,493.10x = 319,993.09 × 80,288.33
  4. Step 4: Simplify right side
    213,493.10x = 25,691,709,006.95
  5. Step 5: Solve for x
    x = 25,691,709,006.95/213,493.10
  6. Step 6: Final answer
    x = 120,339.77

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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.