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Finding the Fourth Proportional to 251,692.44, 347,338.02 and 138,517.80

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Solution

The fourth proportional to 251,692.44, 347,338.02 and 138,517.80 is: 191,155.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,692.44 : 347,338.02 = 138,517.80 : x
  2. Step 2: Convert to fraction form
    251,692.44/347,338.02 = 138,517.80/x
  3. Step 3: Cross multiply
    251,692.44x = 347,338.02 × 138,517.80
  4. Step 4: Simplify right side
    251,692.44x = 48,112,498,386.76
  5. Step 5: Solve for x
    x = 48,112,498,386.76/251,692.44
  6. Step 6: Final answer
    x = 191,155.91

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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.