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Finding the Fourth Proportional to 481,392,137.80, 664,323,801.78 and 261,375,563.80

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Solution

The fourth proportional to 481,392,137.80, 664,323,801.78 and 261,375,563.80 is: 360,699,717.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,392,137.80 : 664,323,801.78 = 261,375,563.80 : x
  2. Step 2: Convert to fraction form
    481,392,137.80/664,323,801.78 = 261,375,563.80/x
  3. Step 3: Cross multiply
    481,392,137.80x = 664,323,801.78 × 261,375,563.80
  4. Step 4: Simplify right side
    481,392,137.80x = 173,638,008,236,006,944
  5. Step 5: Solve for x
    x = 173,638,008,236,006,944/481,392,137.80
  6. Step 6: Final answer
    x = 360,699,717.76

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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.