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Finding the Fourth Proportional to 251,873, 347,584.74 and 138,695.48

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Solution

The fourth proportional to 251,873, 347,584.74 and 138,695.48 is: 191,399.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,873 : 347,584.74 = 138,695.48 : x
  2. Step 2: Convert to fraction form
    251,873/347,584.74 = 138,695.48/x
  3. Step 3: Cross multiply
    251,873x = 347,584.74 × 138,695.48
  4. Step 4: Simplify right side
    251,873x = 48,208,432,354.98
  5. Step 5: Solve for x
    x = 48,208,432,354.98/251,873
  6. Step 6: Final answer
    x = 191,399.76

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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.