Home / 427,869.22-641,876.73-214,738.78

Finding the Fourth Proportional to 427,869.22, 641,876.73 and 214,738.78

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Solution

The fourth proportional to 427,869.22, 641,876.73 and 214,738.78 is: 322,144.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,869.22 : 641,876.73 = 214,738.78 : x
  2. Step 2: Convert to fraction form
    427,869.22/641,876.73 = 214,738.78/x
  3. Step 3: Cross multiply
    427,869.22x = 641,876.73 × 214,738.78
  4. Step 4: Simplify right side
    427,869.22x = 137,835,825,910.59
  5. Step 5: Solve for x
    x = 137,835,825,910.59/427,869.22
  6. Step 6: Final answer
    x = 322,144.76

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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.