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Finding the Fourth Proportional to 326,855.40, 490,269.71 and 90,192.03

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Solution

The fourth proportional to 326,855.40, 490,269.71 and 90,192.03 is: 135,284.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,855.40 : 490,269.71 = 90,192.03 : x
  2. Step 2: Convert to fraction form
    326,855.40/490,269.71 = 90,192.03/x
  3. Step 3: Cross multiply
    326,855.40x = 490,269.71 × 90,192.03
  4. Step 4: Simplify right side
    326,855.40x = 44,218,419,941.45
  5. Step 5: Solve for x
    x = 44,218,419,941.45/326,855.40
  6. Step 6: Final answer
    x = 135,284.35

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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.