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Finding the Fourth Proportional to 320,959.80, 481,310.10 and 110,489.40

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Solution

The fourth proportional to 320,959.80, 481,310.10 and 110,489.40 is: 165,689.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,959.80 : 481,310.10 = 110,489.40 : x
  2. Step 2: Convert to fraction form
    320,959.80/481,310.10 = 110,489.40/x
  3. Step 3: Cross multiply
    320,959.80x = 481,310.10 × 110,489.40
  4. Step 4: Simplify right side
    320,959.80x = 53,179,664,162.94
  5. Step 5: Solve for x
    x = 53,179,664,162.94/320,959.80
  6. Step 6: Final answer
    x = 165,689.49

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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.