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Finding the Fourth Proportional to 458,810.92, 687,168.08 and 219,092.73

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Solution

The fourth proportional to 458,810.92, 687,168.08 and 219,092.73 is: 328,138.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,810.92 : 687,168.08 = 219,092.73 : x
  2. Step 2: Convert to fraction form
    458,810.92/687,168.08 = 219,092.73/x
  3. Step 3: Cross multiply
    458,810.92x = 687,168.08 × 219,092.73
  4. Step 4: Simplify right side
    458,810.92x = 150,553,530,797.34
  5. Step 5: Solve for x
    x = 150,553,530,797.34/458,810.92
  6. Step 6: Final answer
    x = 328,138.51

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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.