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Finding the Third Proportional to 127,890 and 200,623

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Solution

The third proportional to 127,890 and 200,623 is: 314,720.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,890 : 200,623 = 200,623 : x
  2. Step 2: Convert to fraction form
    127,890/200,623 = 200,623/x
  3. Step 3: Cross multiply
    127,890x = 200,623 × 200,623
  4. Step 4: Simplify right side
    127,890x = 40,249,588,129
  5. Step 5: Solve for x
    x = 40,249,588,129/127,890
  6. Step 6: Final answer
    x = 314,720.37

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.