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Finding the Fourth Proportional to 300,383.96, 450,078.38 and 211,201.76

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Solution

The fourth proportional to 300,383.96, 450,078.38 and 211,201.76 is: 316,452.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,383.96 : 450,078.38 = 211,201.76 : x
  2. Step 2: Convert to fraction form
    300,383.96/450,078.38 = 211,201.76/x
  3. Step 3: Cross multiply
    300,383.96x = 450,078.38 × 211,201.76
  4. Step 4: Simplify right side
    300,383.96x = 95,057,345,993.95
  5. Step 5: Solve for x
    x = 95,057,345,993.95/300,383.96
  6. Step 6: Final answer
    x = 316,452.80

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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.