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Finding the Fourth Proportional to 351,694.78, 527,542.82 and 85,455.52

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Solution

The fourth proportional to 351,694.78, 527,542.82 and 85,455.52 is: 128,183.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,694.78 : 527,542.82 = 85,455.52 : x
  2. Step 2: Convert to fraction form
    351,694.78/527,542.82 = 85,455.52/x
  3. Step 3: Cross multiply
    351,694.78x = 527,542.82 × 85,455.52
  4. Step 4: Simplify right side
    351,694.78x = 45,081,446,005.37
  5. Step 5: Solve for x
    x = 45,081,446,005.37/351,694.78
  6. Step 6: Final answer
    x = 128,183.44

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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.