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Finding the Fourth Proportional to 260,919.88, 391,491.24 and 111,230.67

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Solution

The fourth proportional to 260,919.88, 391,491.24 and 111,230.67 is: 166,893.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,919.88 : 391,491.24 = 111,230.67 : x
  2. Step 2: Convert to fraction form
    260,919.88/391,491.24 = 111,230.67/x
  3. Step 3: Cross multiply
    260,919.88x = 391,491.24 × 111,230.67
  4. Step 4: Simplify right side
    260,919.88x = 43,545,832,924.33
  5. Step 5: Solve for x
    x = 43,545,832,924.33/260,919.88
  6. Step 6: Final answer
    x = 166,893.50

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1.5x scale

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.