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Finding the Fourth Proportional to 326,996.24, 490,489.49 and 90,333.68

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Solution

The fourth proportional to 326,996.24, 490,489.49 and 90,333.68 is: 135,499.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,996.24 : 490,489.49 = 90,333.68 : x
  2. Step 2: Convert to fraction form
    326,996.24/490,489.49 = 90,333.68/x
  3. Step 3: Cross multiply
    326,996.24x = 490,489.49 × 90,333.68
  4. Step 4: Simplify right side
    326,996.24x = 44,307,718,406.41
  5. Step 5: Solve for x
    x = 44,307,718,406.41/326,996.24
  6. Step 6: Final answer
    x = 135,499.17

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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.