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Finding the Fourth Proportional to 271,679.54, 407,540.91 and 84,692.66

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Solution

The fourth proportional to 271,679.54, 407,540.91 and 84,692.66 is: 127,045.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,679.54 : 407,540.91 = 84,692.66 : x
  2. Step 2: Convert to fraction form
    271,679.54/407,540.91 = 84,692.66/x
  3. Step 3: Cross multiply
    271,679.54x = 407,540.91 × 84,692.66
  4. Step 4: Simplify right side
    271,679.54x = 34,515,723,726.72
  5. Step 5: Solve for x
    x = 34,515,723,726.72/271,679.54
  6. Step 6: Final answer
    x = 127,045.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.