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Finding the Third Proportional to 208,427 and 424,219

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Solution

The third proportional to 208,427 and 424,219 is: 863,428.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,427 : 424,219 = 424,219 : x
  2. Step 2: Convert to fraction form
    208,427/424,219 = 424,219/x
  3. Step 3: Cross multiply
    208,427x = 424,219 × 424,219
  4. Step 4: Simplify right side
    208,427x = 179,961,759,961
  5. Step 5: Solve for x
    x = 179,961,759,961/208,427
  6. Step 6: Final answer
    x = 863,428.25

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.