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Finding the Fourth Proportional to 251,711, 347,361.27 and 138,531.32

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Solution

The fourth proportional to 251,711, 347,361.27 and 138,531.32 is: 191,173.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,711 : 347,361.27 = 138,531.32 : x
  2. Step 2: Convert to fraction form
    251,711/347,361.27 = 138,531.32/x
  3. Step 3: Cross multiply
    251,711x = 347,361.27 × 138,531.32
  4. Step 4: Simplify right side
    251,711x = 48,120,415,249.98
  5. Step 5: Solve for x
    x = 48,120,415,249.98/251,711
  6. Step 6: Final answer
    x = 191,173.27

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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.