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Finding the Third Proportional to 142,584 and 303,515

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Solution

The third proportional to 142,584 and 303,515 is: 646,084.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,584 : 303,515 = 303,515 : x
  2. Step 2: Convert to fraction form
    142,584/303,515 = 303,515/x
  3. Step 3: Cross multiply
    142,584x = 303,515 × 303,515
  4. Step 4: Simplify right side
    142,584x = 92,121,355,225
  5. Step 5: Solve for x
    x = 92,121,355,225/142,584
  6. Step 6: Final answer
    x = 646,084.80

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.