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Finding the Fourth Proportional to 203,342.54, 280,545.45 and 122,739.44

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Solution

The fourth proportional to 203,342.54, 280,545.45 and 122,739.44 is: 169,339.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,342.54 : 280,545.45 = 122,739.44 : x
  2. Step 2: Convert to fraction form
    203,342.54/280,545.45 = 122,739.44/x
  3. Step 3: Cross multiply
    203,342.54x = 280,545.45 × 122,739.44
  4. Step 4: Simplify right side
    203,342.54x = 34,433,991,427.55
  5. Step 5: Solve for x
    x = 34,433,991,427.55/203,342.54
  6. Step 6: Final answer
    x = 169,339.83

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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.