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Finding the Fourth Proportional to 253,355.67, 349,625.43 and 138,633.84

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Solution

The fourth proportional to 253,355.67, 349,625.43 and 138,633.84 is: 191,311.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,355.67 : 349,625.43 = 138,633.84 : x
  2. Step 2: Convert to fraction form
    253,355.67/349,625.43 = 138,633.84/x
  3. Step 3: Cross multiply
    253,355.67x = 349,625.43 × 138,633.84
  4. Step 4: Simplify right side
    253,355.67x = 48,469,915,922.55
  5. Step 5: Solve for x
    x = 48,469,915,922.55/253,355.67
  6. Step 6: Final answer
    x = 191,311.75

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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.