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Finding the Fourth Proportional to 326,732.80, 490,099.20 and 220,444.60

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Solution

The fourth proportional to 326,732.80, 490,099.20 and 220,444.60 is: 330,666.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,732.80 : 490,099.20 = 220,444.60 : x
  2. Step 2: Convert to fraction form
    326,732.80/490,099.20 = 220,444.60/x
  3. Step 3: Cross multiply
    326,732.80x = 490,099.20 × 220,444.60
  4. Step 4: Simplify right side
    326,732.80x = 108,039,722,104.32
  5. Step 5: Solve for x
    x = 108,039,722,104.32/326,732.80
  6. Step 6: Final answer
    x = 330,666.90

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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.