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Finding the Third Proportional to 139,382 and 305,453

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Solution

The third proportional to 139,382 and 305,453 is: 669,394.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,382 : 305,453 = 305,453 : x
  2. Step 2: Convert to fraction form
    139,382/305,453 = 305,453/x
  3. Step 3: Cross multiply
    139,382x = 305,453 × 305,453
  4. Step 4: Simplify right side
    139,382x = 93,301,535,209
  5. Step 5: Solve for x
    x = 93,301,535,209/139,382
  6. Step 6: Final answer
    x = 669,394.44

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.