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Finding the Fourth Proportional to 395,311.62, 545,530.39 and 214,023.68

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Solution

The fourth proportional to 395,311.62, 545,530.39 and 214,023.68 is: 295,352.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,311.62 : 545,530.39 = 214,023.68 : x
  2. Step 2: Convert to fraction form
    395,311.62/545,530.39 = 214,023.68/x
  3. Step 3: Cross multiply
    395,311.62x = 545,530.39 × 214,023.68
  4. Step 4: Simplify right side
    395,311.62x = 116,756,421,619.64
  5. Step 5: Solve for x
    x = 116,756,421,619.64/395,311.62
  6. Step 6: Final answer
    x = 295,352.87

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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.