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Finding the Fourth Proportional to 326,771.70, 490,230.45 and 127,074.30

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Solution

The fourth proportional to 326,771.70, 490,230.45 and 127,074.30 is: 190,639.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,771.70 : 490,230.45 = 127,074.30 : x
  2. Step 2: Convert to fraction form
    326,771.70/490,230.45 = 127,074.30/x
  3. Step 3: Cross multiply
    326,771.70x = 490,230.45 × 127,074.30
  4. Step 4: Simplify right side
    326,771.70x = 62,295,691,272.44
  5. Step 5: Solve for x
    x = 62,295,691,272.44/326,771.70
  6. Step 6: Final answer
    x = 190,639.80

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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.