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Finding the Third Proportional to 163,990 and 245,988

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Solution

The third proportional to 163,990 and 245,988 is: 368,986.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,990 : 245,988 = 245,988 : x
  2. Step 2: Convert to fraction form
    163,990/245,988 = 245,988/x
  3. Step 3: Cross multiply
    163,990x = 245,988 × 245,988
  4. Step 4: Simplify right side
    163,990x = 60,510,096,144
  5. Step 5: Solve for x
    x = 60,510,096,144/163,990
  6. Step 6: Final answer
    x = 368,986.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.