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Finding the Third Proportional to 259,200 and 400,284

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Solution

The third proportional to 259,200 and 400,284 is: 618,160.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,200 : 400,284 = 400,284 : x
  2. Step 2: Convert to fraction form
    259,200/400,284 = 400,284/x
  3. Step 3: Cross multiply
    259,200x = 400,284 × 400,284
  4. Step 4: Simplify right side
    259,200x = 160,227,280,656
  5. Step 5: Solve for x
    x = 160,227,280,656/259,200
  6. Step 6: Final answer
    x = 618,160.81

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.