Home / 221,042.07-331,627.79-71,279.34

Finding the Fourth Proportional to 221,042.07, 331,627.79 and 71,279.34

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Solution

The fourth proportional to 221,042.07, 331,627.79 and 71,279.34 is: 106,939.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,042.07 : 331,627.79 = 71,279.34 : x
  2. Step 2: Convert to fraction form
    221,042.07/331,627.79 = 71,279.34/x
  3. Step 3: Cross multiply
    221,042.07x = 331,627.79 × 71,279.34
  4. Step 4: Simplify right side
    221,042.07x = 23,638,209,640.46
  5. Step 5: Solve for x
    x = 23,638,209,640.46/221,042.07
  6. Step 6: Final answer
    x = 106,939.87

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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.