Home / 221,078.90-331,682.99-71,315.91

Finding the Fourth Proportional to 221,078.90, 331,682.99 and 71,315.91

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Solution

The fourth proportional to 221,078.90, 331,682.99 and 71,315.91 is: 106,994.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,078.90 : 331,682.99 = 71,315.91 : x
  2. Step 2: Convert to fraction form
    221,078.90/331,682.99 = 71,315.91/x
  3. Step 3: Cross multiply
    221,078.90x = 331,682.99 × 71,315.91
  4. Step 4: Simplify right side
    221,078.90x = 23,654,273,906.79
  5. Step 5: Solve for x
    x = 23,654,273,906.79/221,078.90
  6. Step 6: Final answer
    x = 106,994.71

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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.