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Finding the Third Proportional to 178,666.50 and 392,755.50

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Solution

The third proportional to 178,666.50 and 392,755.50 is: 863,378.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,666.50 : 392,755.50 = 392,755.50 : x
  2. Step 2: Convert to fraction form
    178,666.50/392,755.50 = 392,755.50/x
  3. Step 3: Cross multiply
    178,666.50x = 392,755.50 × 392,755.50
  4. Step 4: Simplify right side
    178,666.50x = 154,256,882,780.25
  5. Step 5: Solve for x
    x = 154,256,882,780.25/178,666.50
  6. Step 6: Final answer
    x = 863,378.88

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.