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Finding the Fourth Proportional to 326,560.75, 490,027.66 and 126,855.14

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Solution

The fourth proportional to 326,560.75, 490,027.66 and 126,855.14 is: 190,355.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,560.75 : 490,027.66 = 126,855.14 : x
  2. Step 2: Convert to fraction form
    326,560.75/490,027.66 = 126,855.14/x
  3. Step 3: Cross multiply
    326,560.75x = 490,027.66 × 126,855.14
  4. Step 4: Simplify right side
    326,560.75x = 62,162,524,645.90
  5. Step 5: Solve for x
    x = 62,162,524,645.90/326,560.75
  6. Step 6: Final answer
    x = 190,355.16

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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.