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Finding the Fourth Proportional to 221,012.70, 331,519.05 and 54,800.70

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Solution

The fourth proportional to 221,012.70, 331,519.05 and 54,800.70 is: 82,201.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,012.70 : 331,519.05 = 54,800.70 : x
  2. Step 2: Convert to fraction form
    221,012.70/331,519.05 = 54,800.70/x
  3. Step 3: Cross multiply
    221,012.70x = 331,519.05 × 54,800.70
  4. Step 4: Simplify right side
    221,012.70x = 18,167,476,003.34
  5. Step 5: Solve for x
    x = 18,167,476,003.34/221,012.70
  6. Step 6: Final answer
    x = 82,201.05

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1.5x scale

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.