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Finding the Fourth Proportional to 664,300.80, 996,548.40 and 214,945.20

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Solution

The fourth proportional to 664,300.80, 996,548.40 and 214,945.20 is: 322,449.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,300.80 : 996,548.40 = 214,945.20 : x
  2. Step 2: Convert to fraction form
    664,300.80/996,548.40 = 214,945.20/x
  3. Step 3: Cross multiply
    664,300.80x = 996,548.40 × 214,945.20
  4. Step 4: Simplify right side
    664,300.80x = 214,203,295,147.68
  5. Step 5: Solve for x
    x = 214,203,295,147.68/664,300.80
  6. Step 6: Final answer
    x = 322,449.25

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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.