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Finding the Fourth Proportional to 800,293.20, 1,200,029.40 and 239,254.80

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Solution

The fourth proportional to 800,293.20, 1,200,029.40 and 239,254.80 is: 358,759.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,293.20 : 1,200,029.40 = 239,254.80 : x
  2. Step 2: Convert to fraction form
    800,293.20/1,200,029.40 = 239,254.80/x
  3. Step 3: Cross multiply
    800,293.20x = 1,200,029.40 × 239,254.80
  4. Step 4: Simplify right side
    800,293.20x = 287,112,794,091.12
  5. Step 5: Solve for x
    x = 287,112,794,091.12/800,293.20
  6. Step 6: Final answer
    x = 358,759.51

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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.