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Finding the Third Proportional to 155,672 and 221,844

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Solution

The third proportional to 155,672 and 221,844 is: 316,143.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,672 : 221,844 = 221,844 : x
  2. Step 2: Convert to fraction form
    155,672/221,844 = 221,844/x
  3. Step 3: Cross multiply
    155,672x = 221,844 × 221,844
  4. Step 4: Simplify right side
    155,672x = 49,214,760,336
  5. Step 5: Solve for x
    x = 49,214,760,336/155,672
  6. Step 6: Final answer
    x = 316,143.95

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.