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Finding the Fourth Proportional to 251,956.02, 347,699.23 and 138,778.77

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Solution

The fourth proportional to 251,956.02, 347,699.23 and 138,778.77 is: 191,514.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,956.02 : 347,699.23 = 138,778.77 : x
  2. Step 2: Convert to fraction form
    251,956.02/347,699.23 = 138,778.77/x
  3. Step 3: Cross multiply
    251,956.02x = 347,699.23 × 138,778.77
  4. Step 4: Simplify right side
    251,956.02x = 48,253,271,469.35
  5. Step 5: Solve for x
    x = 48,253,271,469.35/251,956.02
  6. Step 6: Final answer
    x = 191,514.66

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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.