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Finding the Third Proportional to 155,179,990 and 258,622,514

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Solution

The third proportional to 155,179,990 and 258,622,514 is: 431,019,519.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,179,990 : 258,622,514 = 258,622,514 : x
  2. Step 2: Convert to fraction form
    155,179,990/258,622,514 = 258,622,514/x
  3. Step 3: Cross multiply
    155,179,990x = 258,622,514 × 258,622,514
  4. Step 4: Simplify right side
    155,179,990x = 66,885,604,747,680,192
  5. Step 5: Solve for x
    x = 66,885,604,747,680,192/155,179,990
  6. Step 6: Final answer
    x = 431,019,519.64

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.