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Finding the Fourth Proportional to 339,390.85, 468,344.23 and 203,499.78

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Solution

The fourth proportional to 339,390.85, 468,344.23 and 203,499.78 is: 280,820.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,390.85 : 468,344.23 = 203,499.78 : x
  2. Step 2: Convert to fraction form
    339,390.85/468,344.23 = 203,499.78/x
  3. Step 3: Cross multiply
    339,390.85x = 468,344.23 × 203,499.78
  4. Step 4: Simplify right side
    339,390.85x = 95,307,946,751.77
  5. Step 5: Solve for x
    x = 95,307,946,751.77/339,390.85
  6. Step 6: Final answer
    x = 280,820.62

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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.