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Finding the Third Proportional to 201,865 and 424,640

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Solution

The third proportional to 201,865 and 424,640 is: 893,265.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,865 : 424,640 = 424,640 : x
  2. Step 2: Convert to fraction form
    201,865/424,640 = 424,640/x
  3. Step 3: Cross multiply
    201,865x = 424,640 × 424,640
  4. Step 4: Simplify right side
    201,865x = 180,319,129,600
  5. Step 5: Solve for x
    x = 180,319,129,600/201,865
  6. Step 6: Final answer
    x = 893,265.94

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.