Home / 221,291.19-331,640.29-207,119.43

Finding the Fourth Proportional to 221,291.19, 331,640.29 and 207,119.43

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Solution

The fourth proportional to 221,291.19, 331,640.29 and 207,119.43 is: 310,401.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,291.19 : 331,640.29 = 207,119.43 : x
  2. Step 2: Convert to fraction form
    221,291.19/331,640.29 = 207,119.43/x
  3. Step 3: Cross multiply
    221,291.19x = 331,640.29 × 207,119.43
  4. Step 4: Simplify right side
    221,291.19x = 68,689,147,829.83
  5. Step 5: Solve for x
    x = 68,689,147,829.83/221,291.19
  6. Step 6: Final answer
    x = 310,401.64

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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.