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Finding the Third Proportional to 288,239 and 458,020

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Solution

The third proportional to 288,239 and 458,020 is: 727,806.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,239 : 458,020 = 458,020 : x
  2. Step 2: Convert to fraction form
    288,239/458,020 = 458,020/x
  3. Step 3: Cross multiply
    288,239x = 458,020 × 458,020
  4. Step 4: Simplify right side
    288,239x = 209,782,320,400
  5. Step 5: Solve for x
    x = 209,782,320,400/288,239
  6. Step 6: Final answer
    x = 727,806.86

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.