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Finding the Third Proportional to 81,490 and 180,476

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Solution

The third proportional to 81,490 and 180,476 is: 399,700.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,490 : 180,476 = 180,476 : x
  2. Step 2: Convert to fraction form
    81,490/180,476 = 180,476/x
  3. Step 3: Cross multiply
    81,490x = 180,476 × 180,476
  4. Step 4: Simplify right side
    81,490x = 32,571,586,576
  5. Step 5: Solve for x
    x = 32,571,586,576/81,490
  6. Step 6: Final answer
    x = 399,700.41

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.