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Finding the Third Proportional to 149,258.25 and 315,363.38

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Solution

The third proportional to 149,258.25 and 315,363.38 is: 666,322.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,258.25 : 315,363.38 = 315,363.38 : x
  2. Step 2: Convert to fraction form
    149,258.25/315,363.38 = 315,363.38/x
  3. Step 3: Cross multiply
    149,258.25x = 315,363.38 × 315,363.38
  4. Step 4: Simplify right side
    149,258.25x = 99,454,058,291.39
  5. Step 5: Solve for x
    x = 99,454,058,291.39/149,258.25
  6. Step 6: Final answer
    x = 666,322.02

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.