Home / 221,447.78-331,672.26-102,869.58

Finding the Fourth Proportional to 221,447.78, 331,672.26 and 102,869.58

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Solution

The fourth proportional to 221,447.78, 331,672.26 and 102,869.58 is: 154,072.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,447.78 : 331,672.26 = 102,869.58 : x
  2. Step 2: Convert to fraction form
    221,447.78/331,672.26 = 102,869.58/x
  3. Step 3: Cross multiply
    221,447.78x = 331,672.26 × 102,869.58
  4. Step 4: Simplify right side
    221,447.78x = 34,118,986,083.85
  5. Step 5: Solve for x
    x = 34,118,986,083.85/221,447.78
  6. Step 6: Final answer
    x = 154,072.38

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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.