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Finding the Third Proportional to 147,695 and 316,390

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Solution

The third proportional to 147,695 and 316,390 is: 677,765.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,695 : 316,390 = 316,390 : x
  2. Step 2: Convert to fraction form
    147,695/316,390 = 316,390/x
  3. Step 3: Cross multiply
    147,695x = 316,390 × 316,390
  4. Step 4: Simplify right side
    147,695x = 100,102,632,100
  5. Step 5: Solve for x
    x = 100,102,632,100/147,695
  6. Step 6: Final answer
    x = 677,765.88

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.