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Finding the Fourth Proportional to 664,393.01, 996,747.90 and 215,114.01

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Solution

The fourth proportional to 664,393.01, 996,747.90 and 215,114.01 is: 322,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,393.01 : 996,747.90 = 215,114.01 : x
  2. Step 2: Convert to fraction form
    664,393.01/996,747.90 = 215,114.01/x
  3. Step 3: Cross multiply
    664,393.01x = 996,747.90 × 215,114.01
  4. Step 4: Simplify right side
    664,393.01x = 214,414,440,605.33
  5. Step 5: Solve for x
    x = 214,414,440,605.33/664,393.01
  6. Step 6: Final answer
    x = 322,722.30

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Double scale
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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.