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Finding the Fourth Proportional to 299,568,645.60, 449,352,968.40 and 248,508,319.20

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Solution

The fourth proportional to 299,568,645.60, 449,352,968.40 and 248,508,319.20 is: 372,762,478.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,568,645.60 : 449,352,968.40 = 248,508,319.20 : x
  2. Step 2: Convert to fraction form
    299,568,645.60/449,352,968.40 = 248,508,319.20/x
  3. Step 3: Cross multiply
    299,568,645.60x = 449,352,968.40 × 248,508,319.20
  4. Step 4: Simplify right side
    299,568,645.60x = 111,667,950,904,614,704
  5. Step 5: Solve for x
    x = 111,667,950,904,614,704/299,568,645.60
  6. Step 6: Final answer
    x = 372,762,478.80

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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.