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Finding the Third Proportional to 142,110 and 306,990

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Solution

The third proportional to 142,110 and 306,990 is: 663,168.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,110 : 306,990 = 306,990 : x
  2. Step 2: Convert to fraction form
    142,110/306,990 = 306,990/x
  3. Step 3: Cross multiply
    142,110x = 306,990 × 306,990
  4. Step 4: Simplify right side
    142,110x = 94,242,860,100
  5. Step 5: Solve for x
    x = 94,242,860,100/142,110
  6. Step 6: Final answer
    x = 663,168.39

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.