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Finding the Third Proportional to 208,980 and 376,488

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Solution

The third proportional to 208,980 and 376,488 is: 678,262.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,980 : 376,488 = 376,488 : x
  2. Step 2: Convert to fraction form
    208,980/376,488 = 376,488/x
  3. Step 3: Cross multiply
    208,980x = 376,488 × 376,488
  4. Step 4: Simplify right side
    208,980x = 141,743,214,144
  5. Step 5: Solve for x
    x = 141,743,214,144/208,980
  6. Step 6: Final answer
    x = 678,262.10

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Why These Related Problems?

These problems maintain the same ratio (1.80) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.