Home / 221,037.18-331,620.45-71,274.43

Finding the Fourth Proportional to 221,037.18, 331,620.45 and 71,274.43

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Solution

The fourth proportional to 221,037.18, 331,620.45 and 71,274.43 is: 106,932.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,037.18 : 331,620.45 = 71,274.43 : x
  2. Step 2: Convert to fraction form
    221,037.18/331,620.45 = 71,274.43/x
  3. Step 3: Cross multiply
    221,037.18x = 331,620.45 × 71,274.43
  4. Step 4: Simplify right side
    221,037.18x = 23,636,058,550.09
  5. Step 5: Solve for x
    x = 23,636,058,550.09/221,037.18
  6. Step 6: Final answer
    x = 106,932.50

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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.