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Finding the Fourth Proportional to 373,493.13, 515,422.15 and 203,730.90

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Solution

The fourth proportional to 373,493.13, 515,422.15 and 203,730.90 is: 281,149.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,493.13 : 515,422.15 = 203,730.90 : x
  2. Step 2: Convert to fraction form
    373,493.13/515,422.15 = 203,730.90/x
  3. Step 3: Cross multiply
    373,493.13x = 515,422.15 × 203,730.90
  4. Step 4: Simplify right side
    373,493.13x = 105,007,418,499.44
  5. Step 5: Solve for x
    x = 105,007,418,499.44/373,493.13
  6. Step 6: Final answer
    x = 281,149.53

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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.