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Finding the Third Proportional to 140,424 and 212,148

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Solution

The third proportional to 140,424 and 212,148 is: 320,506.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,424 : 212,148 = 212,148 : x
  2. Step 2: Convert to fraction form
    140,424/212,148 = 212,148/x
  3. Step 3: Cross multiply
    140,424x = 212,148 × 212,148
  4. Step 4: Simplify right side
    140,424x = 45,006,773,904
  5. Step 5: Solve for x
    x = 45,006,773,904/140,424
  6. Step 6: Final answer
    x = 320,506.28

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.