Home / 377,049.90-520,297.92-221,976.57

Finding the Fourth Proportional to 377,049.90, 520,297.92 and 221,976.57

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Solution

The fourth proportional to 377,049.90, 520,297.92 and 221,976.57 is: 306,309.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,049.90 : 520,297.92 = 221,976.57 : x
  2. Step 2: Convert to fraction form
    377,049.90/520,297.92 = 221,976.57/x
  3. Step 3: Cross multiply
    377,049.90x = 520,297.92 × 221,976.57
  4. Step 4: Simplify right side
    377,049.90x = 115,493,947,659.73
  5. Step 5: Solve for x
    x = 115,493,947,659.73/377,049.90
  6. Step 6: Final answer
    x = 306,309.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.