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Finding the Fourth Proportional to 800,348.72, 1,200,434.64 and 201,310.12

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Solution

The fourth proportional to 800,348.72, 1,200,434.64 and 201,310.12 is: 301,942.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,348.72 : 1,200,434.64 = 201,310.12 : x
  2. Step 2: Convert to fraction form
    800,348.72/1,200,434.64 = 201,310.12/x
  3. Step 3: Cross multiply
    800,348.72x = 1,200,434.64 × 201,310.12
  4. Step 4: Simplify right side
    800,348.72x = 241,659,641,430.56
  5. Step 5: Solve for x
    x = 241,659,641,430.56/800,348.72
  6. Step 6: Final answer
    x = 301,942.93

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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.