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Finding the Third Proportional to 309,312 and 461,052

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Solution

The third proportional to 309,312 and 461,052 is: 687,231.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,312 : 461,052 = 461,052 : x
  2. Step 2: Convert to fraction form
    309,312/461,052 = 461,052/x
  3. Step 3: Cross multiply
    309,312x = 461,052 × 461,052
  4. Step 4: Simplify right side
    309,312x = 212,568,946,704
  5. Step 5: Solve for x
    x = 212,568,946,704/309,312
  6. Step 6: Final answer
    x = 687,231.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.