Home / 251,938.03-347,658.52-138,760.78

Finding the Fourth Proportional to 251,938.03, 347,658.52 and 138,760.78

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Solution

The fourth proportional to 251,938.03, 347,658.52 and 138,760.78 is: 191,481.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,938.03 : 347,658.52 = 138,760.78 : x
  2. Step 2: Convert to fraction form
    251,938.03/347,658.52 = 138,760.78/x
  3. Step 3: Cross multiply
    251,938.03x = 347,658.52 × 138,760.78
  4. Step 4: Simplify right side
    251,938.03x = 48,241,367,408.85
  5. Step 5: Solve for x
    x = 48,241,367,408.85/251,938.03
  6. Step 6: Final answer
    x = 191,481.09

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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.