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Finding the Fourth Proportional to 326,897.97, 490,375.17 and 90,240.69

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Solution

The fourth proportional to 326,897.97, 490,375.17 and 90,240.69 is: 135,368.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,897.97 : 490,375.17 = 90,240.69 : x
  2. Step 2: Convert to fraction form
    326,897.97/490,375.17 = 90,240.69/x
  3. Step 3: Cross multiply
    326,897.97x = 490,375.17 × 90,240.69
  4. Step 4: Simplify right side
    326,897.97x = 44,251,793,699.67
  5. Step 5: Solve for x
    x = 44,251,793,699.67/326,897.97
  6. Step 6: Final answer
    x = 135,368.82

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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.