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Finding the Fourth Proportional to 339,399.72, 468,389.79 and 203,455.80

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Solution

The fourth proportional to 339,399.72, 468,389.79 and 203,455.80 is: 280,779.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,399.72 : 468,389.79 = 203,455.80 : x
  2. Step 2: Convert to fraction form
    339,399.72/468,389.79 = 203,455.80/x
  3. Step 3: Cross multiply
    339,399.72x = 468,389.79 × 203,455.80
  4. Step 4: Simplify right side
    339,399.72x = 95,296,619,436.28
  5. Step 5: Solve for x
    x = 95,296,619,436.28/339,399.72
  6. Step 6: Final answer
    x = 280,779.90

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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.