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Finding the Fourth Proportional to 283,458.57, 391,173.37 and 154,396.65

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Solution

The fourth proportional to 283,458.57, 391,173.37 and 154,396.65 is: 213,067.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,458.57 : 391,173.37 = 154,396.65 : x
  2. Step 2: Convert to fraction form
    283,458.57/391,173.37 = 154,396.65/x
  3. Step 3: Cross multiply
    283,458.57x = 391,173.37 × 154,396.65
  4. Step 4: Simplify right side
    283,458.57x = 60,395,856,777.77
  5. Step 5: Solve for x
    x = 60,395,856,777.77/283,458.57
  6. Step 6: Final answer
    x = 213,067.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.