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Finding the Fourth Proportional to 800,339.12, 1,200,420.26 and 201,300.52

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Solution

The fourth proportional to 800,339.12, 1,200,420.26 and 201,300.52 is: 301,928.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,339.12 : 1,200,420.26 = 201,300.52 : x
  2. Step 2: Convert to fraction form
    800,339.12/1,200,420.26 = 201,300.52/x
  3. Step 3: Cross multiply
    800,339.12x = 1,200,420.26 × 201,300.52
  4. Step 4: Simplify right side
    800,339.12x = 241,645,222,556.54
  5. Step 5: Solve for x
    x = 241,645,222,556.54/800,339.12
  6. Step 6: Final answer
    x = 301,928.54

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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.