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Finding the Fourth Proportional to 391,279.60, 587,178.60 and 222,799.60

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Solution

The fourth proportional to 391,279.60, 587,178.60 and 222,799.60 is: 334,346.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,279.60 : 587,178.60 = 222,799.60 : x
  2. Step 2: Convert to fraction form
    391,279.60/587,178.60 = 222,799.60/x
  3. Step 3: Cross multiply
    391,279.60x = 587,178.60 × 222,799.60
  4. Step 4: Simplify right side
    391,279.60x = 130,823,157,208.56
  5. Step 5: Solve for x
    x = 130,823,157,208.56/391,279.60
  6. Step 6: Final answer
    x = 334,346.99

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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.