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Finding the Fourth Proportional to 482,208.78, 721,894.26 and 321,887.06

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Solution

The fourth proportional to 482,208.78, 721,894.26 and 321,887.06 is: 481,883.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,208.78 : 721,894.26 = 321,887.06 : x
  2. Step 2: Convert to fraction form
    482,208.78/721,894.26 = 321,887.06/x
  3. Step 3: Cross multiply
    482,208.78x = 721,894.26 × 321,887.06
  4. Step 4: Simplify right side
    482,208.78x = 232,368,420,982.28
  5. Step 5: Solve for x
    x = 232,368,420,982.28/482,208.78
  6. Step 6: Final answer
    x = 481,883.43

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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.