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Finding the Third Proportional to 200,353 and 312,018

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Solution

The third proportional to 200,353 and 312,018 is: 485,918.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,353 : 312,018 = 312,018 : x
  2. Step 2: Convert to fraction form
    200,353/312,018 = 312,018/x
  3. Step 3: Cross multiply
    200,353x = 312,018 × 312,018
  4. Step 4: Simplify right side
    200,353x = 97,355,232,324
  5. Step 5: Solve for x
    x = 97,355,232,324/200,353
  6. Step 6: Final answer
    x = 485,918.52

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.