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Finding the Fourth Proportional to 379,654.17, 523,906.16 and 218,514.39

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Solution

The fourth proportional to 379,654.17, 523,906.16 and 218,514.39 is: 301,540.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,654.17 : 523,906.16 = 218,514.39 : x
  2. Step 2: Convert to fraction form
    379,654.17/523,906.16 = 218,514.39/x
  3. Step 3: Cross multiply
    379,654.17x = 523,906.16 × 218,514.39
  4. Step 4: Simplify right side
    379,654.17x = 114,481,033,877.07
  5. Step 5: Solve for x
    x = 114,481,033,877.07/379,654.17
  6. Step 6: Final answer
    x = 301,540.30

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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.