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Finding the Third Proportional to 343,642 and 505,165

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Solution

The third proportional to 343,642 and 505,165 is: 742,609.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,642 : 505,165 = 505,165 : x
  2. Step 2: Convert to fraction form
    343,642/505,165 = 505,165/x
  3. Step 3: Cross multiply
    343,642x = 505,165 × 505,165
  4. Step 4: Simplify right side
    343,642x = 255,191,677,225
  5. Step 5: Solve for x
    x = 255,191,677,225/343,642
  6. Step 6: Final answer
    x = 742,609.10

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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.