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Finding the Third Proportional to 288,452 and 430,284

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Solution

The third proportional to 288,452 and 430,284 is: 641,854.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,452 : 430,284 = 430,284 : x
  2. Step 2: Convert to fraction form
    288,452/430,284 = 430,284/x
  3. Step 3: Cross multiply
    288,452x = 430,284 × 430,284
  4. Step 4: Simplify right side
    288,452x = 185,144,320,656
  5. Step 5: Solve for x
    x = 185,144,320,656/288,452
  6. Step 6: Final answer
    x = 641,854.87

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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.