Home / 621,139.92-931,906.68-221,771.82

Finding the Fourth Proportional to 621,139.92, 931,906.68 and 221,771.82

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Solution

The fourth proportional to 621,139.92, 931,906.68 and 221,771.82 is: 332,728.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,139.92 : 931,906.68 = 221,771.82 : x
  2. Step 2: Convert to fraction form
    621,139.92/931,906.68 = 221,771.82/x
  3. Step 3: Cross multiply
    621,139.92x = 931,906.68 × 221,771.82
  4. Step 4: Simplify right side
    621,139.92x = 206,670,640,493.76
  5. Step 5: Solve for x
    x = 206,670,640,493.76/621,139.92
  6. Step 6: Final answer
    x = 332,728.00

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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.