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Finding the Third Proportional to 288,393 and 430,200

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Solution

The third proportional to 288,393 and 430,200 is: 641,735.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,393 : 430,200 = 430,200 : x
  2. Step 2: Convert to fraction form
    288,393/430,200 = 430,200/x
  3. Step 3: Cross multiply
    288,393x = 430,200 × 430,200
  4. Step 4: Simplify right side
    288,393x = 185,072,040,000
  5. Step 5: Solve for x
    x = 185,072,040,000/288,393
  6. Step 6: Final answer
    x = 641,735.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.