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Finding the Third Proportional to 356,640.25 and 554,004.38

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Solution

The third proportional to 356,640.25 and 554,004.38 is: 860,589.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,640.25 : 554,004.38 = 554,004.38 : x
  2. Step 2: Convert to fraction form
    356,640.25/554,004.38 = 554,004.38/x
  3. Step 3: Cross multiply
    356,640.25x = 554,004.38 × 554,004.38
  4. Step 4: Simplify right side
    356,640.25x = 306,920,847,519.14
  5. Step 5: Solve for x
    x = 306,920,847,519.14/356,640.25
  6. Step 6: Final answer
    x = 860,589.48

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.