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Finding the Third Proportional to 128,604 and 282,108

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Solution

The third proportional to 128,604 and 282,108 is: 618,837.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,604 : 282,108 = 282,108 : x
  2. Step 2: Convert to fraction form
    128,604/282,108 = 282,108/x
  3. Step 3: Cross multiply
    128,604x = 282,108 × 282,108
  4. Step 4: Simplify right side
    128,604x = 79,584,923,664
  5. Step 5: Solve for x
    x = 79,584,923,664/128,604
  6. Step 6: Final answer
    x = 618,837.08

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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.