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Finding the Third Proportional to 100,784.50 and 219,989

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Solution

The third proportional to 100,784.50 and 219,989 is: 480,184.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,784.50 : 219,989 = 219,989 : x
  2. Step 2: Convert to fraction form
    100,784.50/219,989 = 219,989/x
  3. Step 3: Cross multiply
    100,784.50x = 219,989 × 219,989
  4. Step 4: Simplify right side
    100,784.50x = 48,395,160,121
  5. Step 5: Solve for x
    x = 48,395,160,121/100,784.50
  6. Step 6: Final answer
    x = 480,184.55

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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.