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Finding the Third Proportional to 258,411,980 and 397,197,108

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Solution

The third proportional to 258,411,980 and 397,197,108 is: 610,519,460.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,411,980 : 397,197,108 = 397,197,108 : x
  2. Step 2: Convert to fraction form
    258,411,980/397,197,108 = 397,197,108/x
  3. Step 3: Cross multiply
    258,411,980x = 397,197,108 × 397,197,108
  4. Step 4: Simplify right side
    258,411,980x = 157,765,542,603,563,648
  5. Step 5: Solve for x
    x = 157,765,542,603,563,648/258,411,980
  6. Step 6: Final answer
    x = 610,519,460.45

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.