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Finding the Third Proportional to 197,717.50 and 306,407.50

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Solution

The third proportional to 197,717.50 and 306,407.50 is: 474,846.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,717.50 : 306,407.50 = 306,407.50 : x
  2. Step 2: Convert to fraction form
    197,717.50/306,407.50 = 306,407.50/x
  3. Step 3: Cross multiply
    197,717.50x = 306,407.50 × 306,407.50
  4. Step 4: Simplify right side
    197,717.50x = 93,885,556,056.25
  5. Step 5: Solve for x
    x = 93,885,556,056.25/197,717.50
  6. Step 6: Final answer
    x = 474,846.97

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.