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Finding the Third Proportional to 129,748 and 285,038

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Solution

The third proportional to 129,748 and 285,038 is: 626,188.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,748 : 285,038 = 285,038 : x
  2. Step 2: Convert to fraction form
    129,748/285,038 = 285,038/x
  3. Step 3: Cross multiply
    129,748x = 285,038 × 285,038
  4. Step 4: Simplify right side
    129,748x = 81,246,661,444
  5. Step 5: Solve for x
    x = 81,246,661,444/129,748
  6. Step 6: Final answer
    x = 626,188.16

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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.