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Finding the Third Proportional to 140,088 and 210,276

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Solution

The third proportional to 140,088 and 210,276 is: 315,630.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,088 : 210,276 = 210,276 : x
  2. Step 2: Convert to fraction form
    140,088/210,276 = 210,276/x
  3. Step 3: Cross multiply
    140,088x = 210,276 × 210,276
  4. Step 4: Simplify right side
    140,088x = 44,215,996,176
  5. Step 5: Solve for x
    x = 44,215,996,176/140,088
  6. Step 6: Final answer
    x = 315,630.15

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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.