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Finding the Third Proportional to 265,239 and 405,605.25

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Solution

The third proportional to 265,239 and 405,605.25 is: 620,254.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,239 : 405,605.25 = 405,605.25 : x
  2. Step 2: Convert to fraction form
    265,239/405,605.25 = 405,605.25/x
  3. Step 3: Cross multiply
    265,239x = 405,605.25 × 405,605.25
  4. Step 4: Simplify right side
    265,239x = 164,515,618,827.56
  5. Step 5: Solve for x
    x = 164,515,618,827.56/265,239
  6. Step 6: Final answer
    x = 620,254.26

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.