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Finding the Third Proportional to 157,720 and 345,975

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Solution

The third proportional to 157,720 and 345,975 is: 758,931.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,720 : 345,975 = 345,975 : x
  2. Step 2: Convert to fraction form
    157,720/345,975 = 345,975/x
  3. Step 3: Cross multiply
    157,720x = 345,975 × 345,975
  4. Step 4: Simplify right side
    157,720x = 119,698,700,625
  5. Step 5: Solve for x
    x = 119,698,700,625/157,720
  6. Step 6: Final answer
    x = 758,931.65

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.