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Finding the Third Proportional to 215,481,998 and 308,139,625

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Solution

The third proportional to 215,481,998 and 308,139,625 is: 440,640,189.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,481,998 : 308,139,625 = 308,139,625 : x
  2. Step 2: Convert to fraction form
    215,481,998/308,139,625 = 308,139,625/x
  3. Step 3: Cross multiply
    215,481,998x = 308,139,625 × 308,139,625
  4. Step 4: Simplify right side
    215,481,998x = 94,950,028,495,140,624
  5. Step 5: Solve for x
    x = 94,950,028,495,140,624/215,481,998
  6. Step 6: Final answer
    x = 440,640,189.79

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.