Home / 221,039.18-331,623.45-71,276.43

Finding the Fourth Proportional to 221,039.18, 331,623.45 and 71,276.43

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Solution

The fourth proportional to 221,039.18, 331,623.45 and 71,276.43 is: 106,935.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,039.18 : 331,623.45 = 71,276.43 : x
  2. Step 2: Convert to fraction form
    221,039.18/331,623.45 = 71,276.43/x
  3. Step 3: Cross multiply
    221,039.18x = 331,623.45 × 71,276.43
  4. Step 4: Simplify right side
    221,039.18x = 23,636,935,620.28
  5. Step 5: Solve for x
    x = 23,636,935,620.28/221,039.18
  6. Step 6: Final answer
    x = 106,935.50

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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.