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Finding the Fourth Proportional to 664,563.46, 996,819.27 and 221,331.46

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Solution

The fourth proportional to 664,563.46, 996,819.27 and 221,331.46 is: 331,988.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,563.46 : 996,819.27 = 221,331.46 : x
  2. Step 2: Convert to fraction form
    664,563.46/996,819.27 = 221,331.46/x
  3. Step 3: Cross multiply
    664,563.46x = 996,819.27 × 221,331.46
  4. Step 4: Simplify right side
    664,563.46x = 220,627,464,385.23
  5. Step 5: Solve for x
    x = 220,627,464,385.23/664,563.46
  6. Step 6: Final answer
    x = 331,988.56

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Similar ratio
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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.