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Finding the Fourth Proportional to 251,997.28, 347,756.29 and 138,820.03

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Solution

The fourth proportional to 251,997.28, 347,756.29 and 138,820.03 is: 191,571.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,997.28 : 347,756.29 = 138,820.03 : x
  2. Step 2: Convert to fraction form
    251,997.28/347,756.29 = 138,820.03/x
  3. Step 3: Cross multiply
    251,997.28x = 347,756.29 × 138,820.03
  4. Step 4: Simplify right side
    251,997.28x = 48,275,537,394.05
  5. Step 5: Solve for x
    x = 48,275,537,394.05/251,997.28
  6. Step 6: Final answer
    x = 191,571.66

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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.