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Finding the Fourth Proportional to 251,364.72, 346,874.49 and 138,186.66

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Solution

The fourth proportional to 251,364.72, 346,874.49 and 138,186.66 is: 190,692.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,364.72 : 346,874.49 = 138,186.66 : x
  2. Step 2: Convert to fraction form
    251,364.72/346,874.49 = 138,186.66/x
  3. Step 3: Cross multiply
    251,364.72x = 346,874.49 × 138,186.66
  4. Step 4: Simplify right side
    251,364.72x = 47,933,427,212.30
  5. Step 5: Solve for x
    x = 47,933,427,212.30/251,364.72
  6. Step 6: Final answer
    x = 190,692.74

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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.