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Finding the Third Proportional to 201,218 and 426,423

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Solution

The third proportional to 201,218 and 426,423 is: 903,679.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,218 : 426,423 = 426,423 : x
  2. Step 2: Convert to fraction form
    201,218/426,423 = 426,423/x
  3. Step 3: Cross multiply
    201,218x = 426,423 × 426,423
  4. Step 4: Simplify right side
    201,218x = 181,836,574,929
  5. Step 5: Solve for x
    x = 181,836,574,929/201,218
  6. Step 6: Final answer
    x = 903,679.47

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.