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Finding the Third Proportional to 328,120 and 469,208

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Solution

The third proportional to 328,120 and 469,208 is: 670,962.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,120 : 469,208 = 469,208 : x
  2. Step 2: Convert to fraction form
    328,120/469,208 = 469,208/x
  3. Step 3: Cross multiply
    328,120x = 469,208 × 469,208
  4. Step 4: Simplify right side
    328,120x = 220,156,147,264
  5. Step 5: Solve for x
    x = 220,156,147,264/328,120
  6. Step 6: Final answer
    x = 670,962.29

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.