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Finding the Fourth Proportional to 373,730.21, 515,679.78 and 220,793.30

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Solution

The fourth proportional to 373,730.21, 515,679.78 and 220,793.30 is: 304,654.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,730.21 : 515,679.78 = 220,793.30 : x
  2. Step 2: Convert to fraction form
    373,730.21/515,679.78 = 220,793.30/x
  3. Step 3: Cross multiply
    373,730.21x = 515,679.78 × 220,793.30
  4. Step 4: Simplify right side
    373,730.21x = 113,858,640,369.47
  5. Step 5: Solve for x
    x = 113,858,640,369.47/373,730.21
  6. Step 6: Final answer
    x = 304,654.63

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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.