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Finding the Third Proportional to 63,991 and 149,490

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Solution

The third proportional to 63,991 and 149,490 is: 349,225.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,991 : 149,490 = 149,490 : x
  2. Step 2: Convert to fraction form
    63,991/149,490 = 149,490/x
  3. Step 3: Cross multiply
    63,991x = 149,490 × 149,490
  4. Step 4: Simplify right side
    63,991x = 22,347,260,100
  5. Step 5: Solve for x
    x = 22,347,260,100/63,991
  6. Step 6: Final answer
    x = 349,225.05

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.