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Finding the Third Proportional to 129,485.81 and 284,667.75

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Solution

The third proportional to 129,485.81 and 284,667.75 is: 625,827.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,485.81 : 284,667.75 = 284,667.75 : x
  2. Step 2: Convert to fraction form
    129,485.81/284,667.75 = 284,667.75/x
  3. Step 3: Cross multiply
    129,485.81x = 284,667.75 × 284,667.75
  4. Step 4: Simplify right side
    129,485.81x = 81,035,727,890.06
  5. Step 5: Solve for x
    x = 81,035,727,890.06/129,485.81
  6. Step 6: Final answer
    x = 625,827.08

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.