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Finding the Fourth Proportional to 251,997.75, 347,756.90 and 138,822.93

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Solution

The fourth proportional to 251,997.75, 347,756.90 and 138,822.93 is: 191,575.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,997.75 : 347,756.90 = 138,822.93 : x
  2. Step 2: Convert to fraction form
    251,997.75/347,756.90 = 138,822.93/x
  3. Step 3: Cross multiply
    251,997.75x = 347,756.90 × 138,822.93
  4. Step 4: Simplify right side
    251,997.75x = 48,276,631,091.60
  5. Step 5: Solve for x
    x = 48,276,631,091.60/251,997.75
  6. Step 6: Final answer
    x = 191,575.64

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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.