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Finding the Fourth Proportional to 251,997.82, 347,740.46 and 138,820.56

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Solution

The fourth proportional to 251,997.82, 347,740.46 and 138,820.56 is: 191,563.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,997.82 : 347,740.46 = 138,820.56 : x
  2. Step 2: Convert to fraction form
    251,997.82/347,740.46 = 138,820.56/x
  3. Step 3: Cross multiply
    251,997.82x = 347,740.46 × 138,820.56
  4. Step 4: Simplify right side
    251,997.82x = 48,273,525,391.86
  5. Step 5: Solve for x
    x = 48,273,525,391.86/251,997.82
  6. Step 6: Final answer
    x = 191,563.27

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1.5x scale

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.