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Finding the Fourth Proportional to 220,891.50, 331,337.25 and 54,679.50

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Solution

The fourth proportional to 220,891.50, 331,337.25 and 54,679.50 is: 82,019.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,891.50 : 331,337.25 = 54,679.50 : x
  2. Step 2: Convert to fraction form
    220,891.50/331,337.25 = 54,679.50/x
  3. Step 3: Cross multiply
    220,891.50x = 331,337.25 × 54,679.50
  4. Step 4: Simplify right side
    220,891.50x = 18,117,355,161.38
  5. Step 5: Solve for x
    x = 18,117,355,161.38/220,891.50
  6. Step 6: Final answer
    x = 82,019.25

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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.