Home / 321,636.20-445,890.88-304,572.80

Finding the Fourth Proportional to 321,636.20, 445,890.88 and 304,572.80

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Solution

The fourth proportional to 321,636.20, 445,890.88 and 304,572.80 is: 422,235.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,636.20 : 445,890.88 = 304,572.80 : x
  2. Step 2: Convert to fraction form
    321,636.20/445,890.88 = 304,572.80/x
  3. Step 3: Cross multiply
    321,636.20x = 445,890.88 × 304,572.80
  4. Step 4: Simplify right side
    321,636.20x = 135,806,233,816.06
  5. Step 5: Solve for x
    x = 135,806,233,816.06/321,636.20
  6. Step 6: Final answer
    x = 422,235.54

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.