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Finding the Fourth Proportional to 251,646, 347,273.94 and 138,471.18

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Solution

The fourth proportional to 251,646, 347,273.94 and 138,471.18 is: 191,091.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,646 : 347,273.94 = 138,471.18 : x
  2. Step 2: Convert to fraction form
    251,646/347,273.94 = 138,471.18/x
  3. Step 3: Cross multiply
    251,646x = 347,273.94 × 138,471.18
  4. Step 4: Simplify right side
    251,646x = 48,087,432,255.05
  5. Step 5: Solve for x
    x = 48,087,432,255.05/251,646
  6. Step 6: Final answer
    x = 191,091.58

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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.