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Finding the Third Proportional to 138,759.75 and 288,461.25

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Solution

The third proportional to 138,759.75 and 288,461.25 is: 599,668.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,759.75 : 288,461.25 = 288,461.25 : x
  2. Step 2: Convert to fraction form
    138,759.75/288,461.25 = 288,461.25/x
  3. Step 3: Cross multiply
    138,759.75x = 288,461.25 × 288,461.25
  4. Step 4: Simplify right side
    138,759.75x = 83,209,892,751.56
  5. Step 5: Solve for x
    x = 83,209,892,751.56/138,759.75
  6. Step 6: Final answer
    x = 599,668.80

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.