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Finding the Third Proportional to 138,526 and 299,205

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Solution

The third proportional to 138,526 and 299,205 is: 646,258.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,526 : 299,205 = 299,205 : x
  2. Step 2: Convert to fraction form
    138,526/299,205 = 299,205/x
  3. Step 3: Cross multiply
    138,526x = 299,205 × 299,205
  4. Step 4: Simplify right side
    138,526x = 89,523,632,025
  5. Step 5: Solve for x
    x = 89,523,632,025/138,526
  6. Step 6: Final answer
    x = 646,258.70

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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.