Home / 305,763.20-422,153.06-198,638.54

Finding the Fourth Proportional to 305,763.20, 422,153.06 and 198,638.54

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Solution

The fourth proportional to 305,763.20, 422,153.06 and 198,638.54 is: 274,251.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,763.20 : 422,153.06 = 198,638.54 : x
  2. Step 2: Convert to fraction form
    305,763.20/422,153.06 = 198,638.54/x
  3. Step 3: Cross multiply
    305,763.20x = 422,153.06 × 198,638.54
  4. Step 4: Simplify right side
    305,763.20x = 83,855,864,390.97
  5. Step 5: Solve for x
    x = 83,855,864,390.97/305,763.20
  6. Step 6: Final answer
    x = 274,251.01

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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.