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Finding the Fourth Proportional to 220,092.30, 330,138.45 and 205,220.70

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Solution

The fourth proportional to 220,092.30, 330,138.45 and 205,220.70 is: 307,831.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,092.30 : 330,138.45 = 205,220.70 : x
  2. Step 2: Convert to fraction form
    220,092.30/330,138.45 = 205,220.70/x
  3. Step 3: Cross multiply
    220,092.30x = 330,138.45 × 205,220.70
  4. Step 4: Simplify right side
    220,092.30x = 67,751,243,805.92
  5. Step 5: Solve for x
    x = 67,751,243,805.92/220,092.30
  6. Step 6: Final answer
    x = 307,831.05

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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.