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Finding the Fourth Proportional to 326,901.47, 490,380.42 and 90,244.19

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Solution

The fourth proportional to 326,901.47, 490,380.42 and 90,244.19 is: 135,374.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,901.47 : 490,380.42 = 90,244.19 : x
  2. Step 2: Convert to fraction form
    326,901.47/490,380.42 = 90,244.19/x
  3. Step 3: Cross multiply
    326,901.47x = 490,380.42 × 90,244.19
  4. Step 4: Simplify right side
    326,901.47x = 44,253,983,794.76
  5. Step 5: Solve for x
    x = 44,253,983,794.76/326,901.47
  6. Step 6: Final answer
    x = 135,374.07

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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.