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Finding the Third Proportional to 317,358 and 486,108

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Solution

The third proportional to 317,358 and 486,108 is: 744,588.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,358 : 486,108 = 486,108 : x
  2. Step 2: Convert to fraction form
    317,358/486,108 = 486,108/x
  3. Step 3: Cross multiply
    317,358x = 486,108 × 486,108
  4. Step 4: Simplify right side
    317,358x = 236,300,987,664
  5. Step 5: Solve for x
    x = 236,300,987,664/317,358
  6. Step 6: Final answer
    x = 744,588.09

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.