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Finding the Fourth Proportional to 378,638.73, 522,522.95 and 206,560.37

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Solution

The fourth proportional to 378,638.73, 522,522.95 and 206,560.37 is: 285,054.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,638.73 : 522,522.95 = 206,560.37 : x
  2. Step 2: Convert to fraction form
    378,638.73/522,522.95 = 206,560.37/x
  3. Step 3: Cross multiply
    378,638.73x = 522,522.95 × 206,560.37
  4. Step 4: Simplify right side
    378,638.73x = 107,932,530,240.08
  5. Step 5: Solve for x
    x = 107,932,530,240.08/378,638.73
  6. Step 6: Final answer
    x = 285,054.12

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1.5x scale

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.