Home / 820,228.45-1,230,406.94-221,180.53

Finding the Fourth Proportional to 820,228.45, 1,230,406.94 and 221,180.53

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Solution

The fourth proportional to 820,228.45, 1,230,406.94 and 221,180.53 is: 331,788.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,228.45 : 1,230,406.94 = 221,180.53 : x
  2. Step 2: Convert to fraction form
    820,228.45/1,230,406.94 = 221,180.53/x
  3. Step 3: Cross multiply
    820,228.45x = 1,230,406.94 × 221,180.53
  4. Step 4: Simplify right side
    820,228.45x = 272,142,059,104.88
  5. Step 5: Solve for x
    x = 272,142,059,104.88/820,228.45
  6. Step 6: Final answer
    x = 331,788.12

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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.