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Finding the Fourth Proportional to 331,250.80, 496,876.20 and 279,929.20

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Solution

The fourth proportional to 331,250.80, 496,876.20 and 279,929.20 is: 419,893.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,250.80 : 496,876.20 = 279,929.20 : x
  2. Step 2: Convert to fraction form
    331,250.80/496,876.20 = 279,929.20/x
  3. Step 3: Cross multiply
    331,250.80x = 496,876.20 × 279,929.20
  4. Step 4: Simplify right side
    331,250.80x = 139,090,157,165.04
  5. Step 5: Solve for x
    x = 139,090,157,165.04/331,250.80
  6. Step 6: Final answer
    x = 419,893.80

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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.