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Finding the Third Proportional to 145,276 and 222,138

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Solution

The third proportional to 145,276 and 222,138 is: 339,665.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,276 : 222,138 = 222,138 : x
  2. Step 2: Convert to fraction form
    145,276/222,138 = 222,138/x
  3. Step 3: Cross multiply
    145,276x = 222,138 × 222,138
  4. Step 4: Simplify right side
    145,276x = 49,345,291,044
  5. Step 5: Solve for x
    x = 49,345,291,044/145,276
  6. Step 6: Final answer
    x = 339,665.82

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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.