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Finding the Third Proportional to 209,068 and 315,548

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Solution

The third proportional to 209,068 and 315,548 is: 476,259.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,068 : 315,548 = 315,548 : x
  2. Step 2: Convert to fraction form
    209,068/315,548 = 315,548/x
  3. Step 3: Cross multiply
    209,068x = 315,548 × 315,548
  4. Step 4: Simplify right side
    209,068x = 99,570,540,304
  5. Step 5: Solve for x
    x = 99,570,540,304/209,068
  6. Step 6: Final answer
    x = 476,259.11

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.