Home / 213,315.88-320,021.43-80,197.29

Finding the Fourth Proportional to 213,315.88, 320,021.43 and 80,197.29

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Solution

The fourth proportional to 213,315.88, 320,021.43 and 80,197.29 is: 120,313.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,315.88 : 320,021.43 = 80,197.29 : x
  2. Step 2: Convert to fraction form
    213,315.88/320,021.43 = 80,197.29/x
  3. Step 3: Cross multiply
    213,315.88x = 320,021.43 × 80,197.29
  4. Step 4: Simplify right side
    213,315.88x = 25,664,851,578.29
  5. Step 5: Solve for x
    x = 25,664,851,578.29/213,315.88
  6. Step 6: Final answer
    x = 120,313.84

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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.