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Finding the Fourth Proportional to 391,418.44, 587,126.58 and 110,938.12

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Solution

The fourth proportional to 391,418.44, 587,126.58 and 110,938.12 is: 166,406.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,418.44 : 587,126.58 = 110,938.12 : x
  2. Step 2: Convert to fraction form
    391,418.44/587,126.58 = 110,938.12/x
  3. Step 3: Cross multiply
    391,418.44x = 587,126.58 × 110,938.12
  4. Step 4: Simplify right side
    391,418.44x = 65,134,718,987.23
  5. Step 5: Solve for x
    x = 65,134,718,987.23/391,418.44
  6. Step 6: Final answer
    x = 166,406.87

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