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Finding the Fourth Proportional to 373,695.78, 515,711.13 and 203,940.82

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Solution

The fourth proportional to 373,695.78, 515,711.13 and 203,940.82 is: 281,444.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,695.78 : 515,711.13 = 203,940.82 : x
  2. Step 2: Convert to fraction form
    373,695.78/515,711.13 = 203,940.82/x
  3. Step 3: Cross multiply
    373,695.78x = 515,711.13 × 203,940.82
  4. Step 4: Simplify right side
    373,695.78x = 105,174,550,735.33
  5. Step 5: Solve for x
    x = 105,174,550,735.33/373,695.78
  6. Step 6: Final answer
    x = 281,444.31

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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.