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Finding the Third Proportional to 98,705.50 and 216,615

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Solution

The third proportional to 98,705.50 and 216,615 is: 475,374.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,705.50 : 216,615 = 216,615 : x
  2. Step 2: Convert to fraction form
    98,705.50/216,615 = 216,615/x
  3. Step 3: Cross multiply
    98,705.50x = 216,615 × 216,615
  4. Step 4: Simplify right side
    98,705.50x = 46,922,058,225
  5. Step 5: Solve for x
    x = 46,922,058,225/98,705.50
  6. Step 6: Final answer
    x = 475,374.30

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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.