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Finding the Third Proportional to 101,240 and 221,560

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Solution

The third proportional to 101,240 and 221,560 is: 484,875.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,240 : 221,560 = 221,560 : x
  2. Step 2: Convert to fraction form
    101,240/221,560 = 221,560/x
  3. Step 3: Cross multiply
    101,240x = 221,560 × 221,560
  4. Step 4: Simplify right side
    101,240x = 49,088,833,600
  5. Step 5: Solve for x
    x = 49,088,833,600/101,240
  6. Step 6: Final answer
    x = 484,875.88

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.