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Finding the Fourth Proportional to 391,669.89, 587,441.77 and 107,293.97

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Solution

The fourth proportional to 391,669.89, 587,441.77 and 107,293.97 is: 160,923.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,669.89 : 587,441.77 = 107,293.97 : x
  2. Step 2: Convert to fraction form
    391,669.89/587,441.77 = 107,293.97/x
  3. Step 3: Cross multiply
    391,669.89x = 587,441.77 × 107,293.97
  4. Step 4: Simplify right side
    391,669.89x = 63,028,960,847.50
  5. Step 5: Solve for x
    x = 63,028,960,847.50/391,669.89
  6. Step 6: Final answer
    x = 160,923.68

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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.