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Finding the Third Proportional to 183,620 and 389,280

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Solution

The third proportional to 183,620 and 389,280 is: 825,285.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,620 : 389,280 = 389,280 : x
  2. Step 2: Convert to fraction form
    183,620/389,280 = 389,280/x
  3. Step 3: Cross multiply
    183,620x = 389,280 × 389,280
  4. Step 4: Simplify right side
    183,620x = 151,538,918,400
  5. Step 5: Solve for x
    x = 151,538,918,400/183,620
  6. Step 6: Final answer
    x = 825,285.47

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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.