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Finding the Fourth Proportional to 391,409.64, 587,212.89 and 110,926.89

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Solution

The fourth proportional to 391,409.64, 587,212.89 and 110,926.89 is: 166,418.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,409.64 : 587,212.89 = 110,926.89 : x
  2. Step 2: Convert to fraction form
    391,409.64/587,212.89 = 110,926.89/x
  3. Step 3: Cross multiply
    391,409.64x = 587,212.89 × 110,926.89
  4. Step 4: Simplify right side
    391,409.64x = 65,137,699,655.61
  5. Step 5: Solve for x
    x = 65,137,699,655.61/391,409.64
  6. Step 6: Final answer
    x = 166,418.23

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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.