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Finding the Third Proportional to 138,763.50 and 302,587.50

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Solution

The third proportional to 138,763.50 and 302,587.50 is: 659,821.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,763.50 : 302,587.50 = 302,587.50 : x
  2. Step 2: Convert to fraction form
    138,763.50/302,587.50 = 302,587.50/x
  3. Step 3: Cross multiply
    138,763.50x = 302,587.50 × 302,587.50
  4. Step 4: Simplify right side
    138,763.50x = 91,559,195,156.25
  5. Step 5: Solve for x
    x = 91,559,195,156.25/138,763.50
  6. Step 6: Final answer
    x = 659,821.89

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.