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Finding the Third Proportional to 101,784 and 218,640

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Solution

The third proportional to 101,784 and 218,640 is: 469,655.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,784 : 218,640 = 218,640 : x
  2. Step 2: Convert to fraction form
    101,784/218,640 = 218,640/x
  3. Step 3: Cross multiply
    101,784x = 218,640 × 218,640
  4. Step 4: Simplify right side
    101,784x = 47,803,449,600
  5. Step 5: Solve for x
    x = 47,803,449,600/101,784
  6. Step 6: Final answer
    x = 469,655.84

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.