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Finding the Fourth Proportional to 399,887.47, 551,487.04 and 331,796.44

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Solution

The fourth proportional to 399,887.47, 551,487.04 and 331,796.44 is: 457,582.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,887.47 : 551,487.04 = 331,796.44 : x
  2. Step 2: Convert to fraction form
    399,887.47/551,487.04 = 331,796.44/x
  3. Step 3: Cross multiply
    399,887.47x = 551,487.04 × 331,796.44
  4. Step 4: Simplify right side
    399,887.47x = 182,981,436,578.14
  5. Step 5: Solve for x
    x = 182,981,436,578.14/399,887.47
  6. Step 6: Final answer
    x = 457,582.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.