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Finding the Third Proportional to 208,165.50 and 311,409

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Solution

The third proportional to 208,165.50 and 311,409 is: 465,858.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,165.50 : 311,409 = 311,409 : x
  2. Step 2: Convert to fraction form
    208,165.50/311,409 = 311,409/x
  3. Step 3: Cross multiply
    208,165.50x = 311,409 × 311,409
  4. Step 4: Simplify right side
    208,165.50x = 96,975,565,281
  5. Step 5: Solve for x
    x = 96,975,565,281/208,165.50
  6. Step 6: Final answer
    x = 465,858.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.