Home / 820,229.45-1,230,408.44-221,181.53

Finding the Fourth Proportional to 820,229.45, 1,230,408.44 and 221,181.53

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Solution

The fourth proportional to 820,229.45, 1,230,408.44 and 221,181.53 is: 331,789.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,229.45 : 1,230,408.44 = 221,181.53 : x
  2. Step 2: Convert to fraction form
    820,229.45/1,230,408.44 = 221,181.53/x
  3. Step 3: Cross multiply
    820,229.45x = 1,230,408.44 × 221,181.53
  4. Step 4: Simplify right side
    820,229.45x = 272,143,621,284.11
  5. Step 5: Solve for x
    x = 272,143,621,284.11/820,229.45
  6. Step 6: Final answer
    x = 331,789.62

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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.