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Finding the Fourth Proportional to 664,135.50, 996,203.25 and 220,903.50

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Solution

The fourth proportional to 664,135.50, 996,203.25 and 220,903.50 is: 331,355.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,135.50 : 996,203.25 = 220,903.50 : x
  2. Step 2: Convert to fraction form
    664,135.50/996,203.25 = 220,903.50/x
  3. Step 3: Cross multiply
    664,135.50x = 996,203.25 × 220,903.50
  4. Step 4: Simplify right side
    664,135.50x = 220,064,784,636.38
  5. Step 5: Solve for x
    x = 220,064,784,636.38/664,135.50
  6. Step 6: Final answer
    x = 331,355.25

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Double scale
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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.