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Finding the Fourth Proportional to 251,850.24, 347,553 and 138,672

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Solution

The fourth proportional to 251,850.24, 347,553 and 138,672 is: 191,367.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,850.24 : 347,553 = 138,672 : x
  2. Step 2: Convert to fraction form
    251,850.24/347,553 = 138,672/x
  3. Step 3: Cross multiply
    251,850.24x = 347,553 × 138,672
  4. Step 4: Simplify right side
    251,850.24x = 48,195,869,616
  5. Step 5: Solve for x
    x = 48,195,869,616/251,850.24
  6. Step 6: Final answer
    x = 191,367.18

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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.