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Finding the Third Proportional to 143,809 and 313,575

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Solution

The third proportional to 143,809 and 313,575 is: 683,749.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,809 : 313,575 = 313,575 : x
  2. Step 2: Convert to fraction form
    143,809/313,575 = 313,575/x
  3. Step 3: Cross multiply
    143,809x = 313,575 × 313,575
  4. Step 4: Simplify right side
    143,809x = 98,329,280,625
  5. Step 5: Solve for x
    x = 98,329,280,625/143,809
  6. Step 6: Final answer
    x = 683,749.14

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.