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Finding the Third Proportional to 178,488 and 389,532

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Solution

The third proportional to 178,488 and 389,532 is: 850,114.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,488 : 389,532 = 389,532 : x
  2. Step 2: Convert to fraction form
    178,488/389,532 = 389,532/x
  3. Step 3: Cross multiply
    178,488x = 389,532 × 389,532
  4. Step 4: Simplify right side
    178,488x = 151,735,179,024
  5. Step 5: Solve for x
    x = 151,735,179,024/178,488
  6. Step 6: Final answer
    x = 850,114.18

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.