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Finding the Third Proportional to 109,213 and 239,840

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Solution

The third proportional to 109,213 and 239,840 is: 526,706.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,213 : 239,840 = 239,840 : x
  2. Step 2: Convert to fraction form
    109,213/239,840 = 239,840/x
  3. Step 3: Cross multiply
    109,213x = 239,840 × 239,840
  4. Step 4: Simplify right side
    109,213x = 57,523,225,600
  5. Step 5: Solve for x
    x = 57,523,225,600/109,213
  6. Step 6: Final answer
    x = 526,706.76

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.