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Finding the Third Proportional to 166,389,018 and 259,656,420

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Solution

The third proportional to 166,389,018 and 259,656,420 is: 405,203,764.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,389,018 : 259,656,420 = 259,656,420 : x
  2. Step 2: Convert to fraction form
    166,389,018/259,656,420 = 259,656,420/x
  3. Step 3: Cross multiply
    166,389,018x = 259,656,420 × 259,656,420
  4. Step 4: Simplify right side
    166,389,018x = 67,421,456,447,216,400
  5. Step 5: Solve for x
    x = 67,421,456,447,216,400/166,389,018
  6. Step 6: Final answer
    x = 405,203,764.39

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.