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Finding the Third Proportional to 288,307 and 619,240

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Solution

The third proportional to 288,307 and 619,240 is: 1,330,034.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,307 : 619,240 = 619,240 : x
  2. Step 2: Convert to fraction form
    288,307/619,240 = 619,240/x
  3. Step 3: Cross multiply
    288,307x = 619,240 × 619,240
  4. Step 4: Simplify right side
    288,307x = 383,458,177,600
  5. Step 5: Solve for x
    x = 383,458,177,600/288,307
  6. Step 6: Final answer
    x = 1,330,034.23

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.