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Finding the Third Proportional to 128,767.50 and 283,693.50

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Solution

The third proportional to 128,767.50 and 283,693.50 is: 625,017.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,767.50 : 283,693.50 = 283,693.50 : x
  2. Step 2: Convert to fraction form
    128,767.50/283,693.50 = 283,693.50/x
  3. Step 3: Cross multiply
    128,767.50x = 283,693.50 × 283,693.50
  4. Step 4: Simplify right side
    128,767.50x = 80,482,001,942.25
  5. Step 5: Solve for x
    x = 80,482,001,942.25/128,767.50
  6. Step 6: Final answer
    x = 625,017.97

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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.