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Finding the Fourth Proportional to 221,170.50, 331,755.75 and 73,426.50

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Solution

The fourth proportional to 221,170.50, 331,755.75 and 73,426.50 is: 110,139.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,170.50 : 331,755.75 = 73,426.50 : x
  2. Step 2: Convert to fraction form
    221,170.50/331,755.75 = 73,426.50/x
  3. Step 3: Cross multiply
    221,170.50x = 331,755.75 × 73,426.50
  4. Step 4: Simplify right side
    221,170.50x = 24,359,663,577.38
  5. Step 5: Solve for x
    x = 24,359,663,577.38/221,170.50
  6. Step 6: Final answer
    x = 110,139.75

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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.