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Finding the Fourth Proportional to 391,341.30, 587,087.28 and 166,697.52

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Solution

The fourth proportional to 391,341.30, 587,087.28 and 166,697.52 is: 250,078.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,341.30 : 587,087.28 = 166,697.52 : x
  2. Step 2: Convert to fraction form
    391,341.30/587,087.28 = 166,697.52/x
  3. Step 3: Cross multiply
    391,341.30x = 587,087.28 × 166,697.52
  4. Step 4: Simplify right side
    391,341.30x = 97,865,993,599.55
  5. Step 5: Solve for x
    x = 97,865,993,599.55/391,341.30
  6. Step 6: Final answer
    x = 250,078.37

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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.