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Finding the Third Proportional to 129,395.81 and 282,781.13

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Solution

The third proportional to 129,395.81 and 282,781.13 is: 617,988.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,395.81 : 282,781.13 = 282,781.13 : x
  2. Step 2: Convert to fraction form
    129,395.81/282,781.13 = 282,781.13/x
  3. Step 3: Cross multiply
    129,395.81x = 282,781.13 × 282,781.13
  4. Step 4: Simplify right side
    129,395.81x = 79,965,164,656.27
  5. Step 5: Solve for x
    x = 79,965,164,656.27/129,395.81
  6. Step 6: Final answer
    x = 617,988.81

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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.