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Finding the Third Proportional to 305,310 and 448,815

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Solution

The third proportional to 305,310 and 448,815 is: 659,771.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,310 : 448,815 = 448,815 : x
  2. Step 2: Convert to fraction form
    305,310/448,815 = 448,815/x
  3. Step 3: Cross multiply
    305,310x = 448,815 × 448,815
  4. Step 4: Simplify right side
    305,310x = 201,434,904,225
  5. Step 5: Solve for x
    x = 201,434,904,225/305,310
  6. Step 6: Final answer
    x = 659,771.72

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.