Home / 221,721.80-332,582.70-209,474.60

Finding the Fourth Proportional to 221,721.80, 332,582.70 and 209,474.60

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Solution

The fourth proportional to 221,721.80, 332,582.70 and 209,474.60 is: 314,211.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,721.80 : 332,582.70 = 209,474.60 : x
  2. Step 2: Convert to fraction form
    221,721.80/332,582.70 = 209,474.60/x
  3. Step 3: Cross multiply
    221,721.80x = 332,582.70 × 209,474.60
  4. Step 4: Simplify right side
    221,721.80x = 69,667,628,049.42
  5. Step 5: Solve for x
    x = 69,667,628,049.42/221,721.80
  6. Step 6: Final answer
    x = 314,211.90

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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.