Home / 213,340.45-320,022.96-80,221.86

Finding the Fourth Proportional to 213,340.45, 320,022.96 and 80,221.86

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Solution

The fourth proportional to 213,340.45, 320,022.96 and 80,221.86 is: 120,337.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,340.45 : 320,022.96 = 80,221.86 : x
  2. Step 2: Convert to fraction form
    213,340.45/320,022.96 = 80,221.86/x
  3. Step 3: Cross multiply
    213,340.45x = 320,022.96 × 80,221.86
  4. Step 4: Simplify right side
    213,340.45x = 25,672,837,093.91
  5. Step 5: Solve for x
    x = 25,672,837,093.91/213,340.45
  6. Step 6: Final answer
    x = 120,337.41

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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.