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Finding the Third Proportional to 100,240 and 149,280

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Solution

The third proportional to 100,240 and 149,280 is: 222,311.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,240 : 149,280 = 149,280 : x
  2. Step 2: Convert to fraction form
    100,240/149,280 = 149,280/x
  3. Step 3: Cross multiply
    100,240x = 149,280 × 149,280
  4. Step 4: Simplify right side
    100,240x = 22,284,518,400
  5. Step 5: Solve for x
    x = 22,284,518,400/100,240
  6. Step 6: Final answer
    x = 222,311.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.