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Finding the Third Proportional to 208,408.50 and 322,908.50

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Solution

The third proportional to 208,408.50 and 322,908.50 is: 500,315.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,408.50 : 322,908.50 = 322,908.50 : x
  2. Step 2: Convert to fraction form
    208,408.50/322,908.50 = 322,908.50/x
  3. Step 3: Cross multiply
    208,408.50x = 322,908.50 × 322,908.50
  4. Step 4: Simplify right side
    208,408.50x = 104,269,899,372.25
  5. Step 5: Solve for x
    x = 104,269,899,372.25/208,408.50
  6. Step 6: Final answer
    x = 500,315.00

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.