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Finding the Third Proportional to 312,009.75 and 445,864.50

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Solution

The third proportional to 312,009.75 and 445,864.50 is: 637,144.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,009.75 : 445,864.50 = 445,864.50 : x
  2. Step 2: Convert to fraction form
    312,009.75/445,864.50 = 445,864.50/x
  3. Step 3: Cross multiply
    312,009.75x = 445,864.50 × 445,864.50
  4. Step 4: Simplify right side
    312,009.75x = 198,795,152,360.25
  5. Step 5: Solve for x
    x = 198,795,152,360.25/312,009.75
  6. Step 6: Final answer
    x = 637,144.04

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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.