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Finding the Fourth Proportional to 326,998.99, 490,493.62 and 90,336.43

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Solution

The fourth proportional to 326,998.99, 490,493.62 and 90,336.43 is: 135,503.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,998.99 : 490,493.62 = 90,336.43 : x
  2. Step 2: Convert to fraction form
    326,998.99/490,493.62 = 90,336.43/x
  3. Step 3: Cross multiply
    326,998.99x = 490,493.62 × 90,336.43
  4. Step 4: Simplify right side
    326,998.99x = 44,309,439,664.43
  5. Step 5: Solve for x
    x = 44,309,439,664.43/326,998.99
  6. Step 6: Final answer
    x = 135,503.29

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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.