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Finding the Fourth Proportional to 422,879.68, 632,997.60 and 272,919.52

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Solution

The fourth proportional to 422,879.68, 632,997.60 and 272,919.52 is: 408,526.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,879.68 : 632,997.60 = 272,919.52 : x
  2. Step 2: Convert to fraction form
    422,879.68/632,997.60 = 272,919.52/x
  3. Step 3: Cross multiply
    422,879.68x = 632,997.60 × 272,919.52
  4. Step 4: Simplify right side
    422,879.68x = 172,757,401,153.15
  5. Step 5: Solve for x
    x = 172,757,401,153.15/422,879.68
  6. Step 6: Final answer
    x = 408,526.13

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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.