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Finding the Fourth Proportional to 221,149.50, 331,724.60 and 67,276.84

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Solution

The fourth proportional to 221,149.50, 331,724.60 and 67,276.84 is: 100,915.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,149.50 : 331,724.60 = 67,276.84 : x
  2. Step 2: Convert to fraction form
    221,149.50/331,724.60 = 67,276.84/x
  3. Step 3: Cross multiply
    221,149.50x = 331,724.60 × 67,276.84
  4. Step 4: Simplify right side
    221,149.50x = 22,317,382,838.26
  5. Step 5: Solve for x
    x = 22,317,382,838.26/221,149.50
  6. Step 6: Final answer
    x = 100,915.37

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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.