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Finding the Fourth Proportional to 352,874, 529,311 and 90,218

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Solution

The fourth proportional to 352,874, 529,311 and 90,218 is: 135,327

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,874 : 529,311 = 90,218 : x
  2. Step 2: Convert to fraction form
    352,874/529,311 = 90,218/x
  3. Step 3: Cross multiply
    352,874x = 529,311 × 90,218
  4. Step 4: Simplify right side
    352,874x = 47,753,379,798
  5. Step 5: Solve for x
    x = 47,753,379,798/352,874
  6. Step 6: Final answer
    x = 135,327

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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.