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Finding the Third Proportional to 218,305.13 and 347,140.69

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Solution

The third proportional to 218,305.13 and 347,140.69 is: 552,010.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,305.13 : 347,140.69 = 347,140.69 : x
  2. Step 2: Convert to fraction form
    218,305.13/347,140.69 = 347,140.69/x
  3. Step 3: Cross multiply
    218,305.13x = 347,140.69 × 347,140.69
  4. Step 4: Simplify right side
    218,305.13x = 120,506,656,917.97
  5. Step 5: Solve for x
    x = 120,506,656,917.97/218,305.13
  6. Step 6: Final answer
    x = 552,010.21

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.