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Finding the Third Proportional to 138,762 and 298,588

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Solution

The third proportional to 138,762 and 298,588 is: 642,501.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,762 : 298,588 = 298,588 : x
  2. Step 2: Convert to fraction form
    138,762/298,588 = 298,588/x
  3. Step 3: Cross multiply
    138,762x = 298,588 × 298,588
  4. Step 4: Simplify right side
    138,762x = 89,154,793,744
  5. Step 5: Solve for x
    x = 89,154,793,744/138,762
  6. Step 6: Final answer
    x = 642,501.50

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.