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Finding the Third Proportional to 288,417 and 447,745

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Solution

The third proportional to 288,417 and 447,745 is: 695,089.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,417 : 447,745 = 447,745 : x
  2. Step 2: Convert to fraction form
    288,417/447,745 = 447,745/x
  3. Step 3: Cross multiply
    288,417x = 447,745 × 447,745
  4. Step 4: Simplify right side
    288,417x = 200,475,585,025
  5. Step 5: Solve for x
    x = 200,475,585,025/288,417
  6. Step 6: Final answer
    x = 695,089.35

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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.