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Finding the Fourth Proportional to 320,820, 481,230 and 99,204

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Solution

The fourth proportional to 320,820, 481,230 and 99,204 is: 148,806

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,820 : 481,230 = 99,204 : x
  2. Step 2: Convert to fraction form
    320,820/481,230 = 99,204/x
  3. Step 3: Cross multiply
    320,820x = 481,230 × 99,204
  4. Step 4: Simplify right side
    320,820x = 47,739,940,920
  5. Step 5: Solve for x
    x = 47,739,940,920/320,820
  6. Step 6: Final answer
    x = 148,806

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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.