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Finding the Fourth Proportional to 391,458.15, 587,187.23 and 110,977.83

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Solution

The fourth proportional to 391,458.15, 587,187.23 and 110,977.83 is: 166,466.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,458.15 : 587,187.23 = 110,977.83 : x
  2. Step 2: Convert to fraction form
    391,458.15/587,187.23 = 110,977.83/x
  3. Step 3: Cross multiply
    391,458.15x = 587,187.23 × 110,977.83
  4. Step 4: Simplify right side
    391,458.15x = 65,164,764,034.22
  5. Step 5: Solve for x
    x = 65,164,764,034.22/391,458.15
  6. Step 6: Final answer
    x = 166,466.75

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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.