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Finding the Third Proportional to 187,830 and 405,252

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Solution

The third proportional to 187,830 and 405,252 is: 874,350.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,830 : 405,252 = 405,252 : x
  2. Step 2: Convert to fraction form
    187,830/405,252 = 405,252/x
  3. Step 3: Cross multiply
    187,830x = 405,252 × 405,252
  4. Step 4: Simplify right side
    187,830x = 164,229,183,504
  5. Step 5: Solve for x
    x = 164,229,183,504/187,830
  6. Step 6: Final answer
    x = 874,350.12

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.