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Finding the Third Proportional to 220,072.50 and 343,258.50

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Solution

The third proportional to 220,072.50 and 343,258.50 is: 535,398.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,072.50 : 343,258.50 = 343,258.50 : x
  2. Step 2: Convert to fraction form
    220,072.50/343,258.50 = 343,258.50/x
  3. Step 3: Cross multiply
    220,072.50x = 343,258.50 × 343,258.50
  4. Step 4: Simplify right side
    220,072.50x = 117,826,397,822.25
  5. Step 5: Solve for x
    x = 117,826,397,822.25/220,072.50
  6. Step 6: Final answer
    x = 535,398.10

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.