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Finding the Fourth Proportional to 391,301.60, 587,171.10 and 166,623.80

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Solution

The fourth proportional to 391,301.60, 587,171.10 and 166,623.80 is: 250,028.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,301.60 : 587,171.10 = 166,623.80 : x
  2. Step 2: Convert to fraction form
    391,301.60/587,171.10 = 166,623.80/x
  3. Step 3: Cross multiply
    391,301.60x = 587,171.10 × 166,623.80
  4. Step 4: Simplify right side
    391,301.60x = 97,836,679,932.18
  5. Step 5: Solve for x
    x = 97,836,679,932.18/391,301.60
  6. Step 6: Final answer
    x = 250,028.83

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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.