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Finding the Fourth Proportional to 326,739.60, 490,109.40 and 301,151.70

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Solution

The fourth proportional to 326,739.60, 490,109.40 and 301,151.70 is: 451,727.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,739.60 : 490,109.40 = 301,151.70 : x
  2. Step 2: Convert to fraction form
    326,739.60/490,109.40 = 301,151.70/x
  3. Step 3: Cross multiply
    326,739.60x = 490,109.40 × 301,151.70
  4. Step 4: Simplify right side
    326,739.60x = 147,597,278,995.98
  5. Step 5: Solve for x
    x = 147,597,278,995.98/326,739.60
  6. Step 6: Final answer
    x = 451,727.55

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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.