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Finding the Fourth Proportional to 373,422.78, 515,317.82 and 203,656.91

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Solution

The fourth proportional to 373,422.78, 515,317.82 and 203,656.91 is: 281,043.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,422.78 : 515,317.82 = 203,656.91 : x
  2. Step 2: Convert to fraction form
    373,422.78/515,317.82 = 203,656.91/x
  3. Step 3: Cross multiply
    373,422.78x = 515,317.82 × 203,656.91
  4. Step 4: Simplify right side
    373,422.78x = 104,948,031,294.26
  5. Step 5: Solve for x
    x = 104,948,031,294.26/373,422.78
  6. Step 6: Final answer
    x = 281,043.46

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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.