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Finding the Third Proportional to 203,418 and 314,712

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Solution

The third proportional to 203,418 and 314,712 is: 486,897.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,418 : 314,712 = 314,712 : x
  2. Step 2: Convert to fraction form
    203,418/314,712 = 314,712/x
  3. Step 3: Cross multiply
    203,418x = 314,712 × 314,712
  4. Step 4: Simplify right side
    203,418x = 99,043,642,944
  5. Step 5: Solve for x
    x = 99,043,642,944/203,418
  6. Step 6: Final answer
    x = 486,897.14

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.