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Finding the Third Proportional to 302,812 and 470,209

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Solution

The third proportional to 302,812 and 470,209 is: 730,144.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,812 : 470,209 = 470,209 : x
  2. Step 2: Convert to fraction form
    302,812/470,209 = 470,209/x
  3. Step 3: Cross multiply
    302,812x = 470,209 × 470,209
  4. Step 4: Simplify right side
    302,812x = 221,096,503,681
  5. Step 5: Solve for x
    x = 221,096,503,681/302,812
  6. Step 6: Final answer
    x = 730,144.46

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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.