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Finding the Fourth Proportional to 326,898.97, 490,376.67 and 90,241.69

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Solution

The fourth proportional to 326,898.97, 490,376.67 and 90,241.69 is: 135,370.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,898.97 : 490,376.67 = 90,241.69 : x
  2. Step 2: Convert to fraction form
    326,898.97/490,376.67 = 90,241.69/x
  3. Step 3: Cross multiply
    326,898.97x = 490,376.67 × 90,241.69
  4. Step 4: Simplify right side
    326,898.97x = 44,252,419,437.37
  5. Step 5: Solve for x
    x = 44,252,419,437.37/326,898.97
  6. Step 6: Final answer
    x = 135,370.32

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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.