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Finding the Fourth Proportional to 391,173.88, 587,040.68 and 166,692.12

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Solution

The fourth proportional to 391,173.88, 587,040.68 and 166,692.12 is: 250,157.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,173.88 : 587,040.68 = 166,692.12 : x
  2. Step 2: Convert to fraction form
    391,173.88/587,040.68 = 166,692.12/x
  3. Step 3: Cross multiply
    391,173.88x = 587,040.68 × 166,692.12
  4. Step 4: Simplify right side
    391,173.88x = 97,855,055,475.44
  5. Step 5: Solve for x
    x = 97,855,055,475.44/391,173.88
  6. Step 6: Final answer
    x = 250,157.44

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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.