Home / 213,388.21-320,129.94-80,269.57

Finding the Fourth Proportional to 213,388.21, 320,129.94 and 80,269.57

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Solution

The fourth proportional to 213,388.21, 320,129.94 and 80,269.57 is: 120,422.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,388.21 : 320,129.94 = 80,269.57 : x
  2. Step 2: Convert to fraction form
    213,388.21/320,129.94 = 80,269.57/x
  3. Step 3: Cross multiply
    213,388.21x = 320,129.94 × 80,269.57
  4. Step 4: Simplify right side
    213,388.21x = 25,696,692,627.93
  5. Step 5: Solve for x
    x = 25,696,692,627.93/213,388.21
  6. Step 6: Final answer
    x = 120,422.27

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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.