Home / 221,042.45-331,628.36-71,279.73

Finding the Fourth Proportional to 221,042.45, 331,628.36 and 71,279.73

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Solution

The fourth proportional to 221,042.45, 331,628.36 and 71,279.73 is: 106,940.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,042.45 : 331,628.36 = 71,279.73 : x
  2. Step 2: Convert to fraction form
    221,042.45/331,628.36 = 71,279.73/x
  3. Step 3: Cross multiply
    221,042.45x = 331,628.36 × 71,279.73
  4. Step 4: Simplify right side
    221,042.45x = 23,638,379,604.74
  5. Step 5: Solve for x
    x = 23,638,379,604.74/221,042.45
  6. Step 6: Final answer
    x = 106,940.45

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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.