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Finding the Fourth Proportional to 251,951.43, 347,692.95 and 138,774.18

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Solution

The fourth proportional to 251,951.43, 347,692.95 and 138,774.18 is: 191,508.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,951.43 : 347,692.95 = 138,774.18 : x
  2. Step 2: Convert to fraction form
    251,951.43/347,692.95 = 138,774.18/x
  3. Step 3: Cross multiply
    251,951.43x = 347,692.95 × 138,774.18
  4. Step 4: Simplify right side
    251,951.43x = 48,250,804,028.03
  5. Step 5: Solve for x
    x = 48,250,804,028.03/251,951.43
  6. Step 6: Final answer
    x = 191,508.36

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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.