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Finding the Third Proportional to 203,426 and 314,985

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Solution

The third proportional to 203,426 and 314,985 is: 487,723.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,426 : 314,985 = 314,985 : x
  2. Step 2: Convert to fraction form
    203,426/314,985 = 314,985/x
  3. Step 3: Cross multiply
    203,426x = 314,985 × 314,985
  4. Step 4: Simplify right side
    203,426x = 99,215,550,225
  5. Step 5: Solve for x
    x = 99,215,550,225/203,426
  6. Step 6: Final answer
    x = 487,723.06

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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.