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Finding the Third Proportional to 259,402.50 and 400,612.50

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Solution

The third proportional to 259,402.50 and 400,612.50 is: 618,692.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,402.50 : 400,612.50 = 400,612.50 : x
  2. Step 2: Convert to fraction form
    259,402.50/400,612.50 = 400,612.50/x
  3. Step 3: Cross multiply
    259,402.50x = 400,612.50 × 400,612.50
  4. Step 4: Simplify right side
    259,402.50x = 160,490,375,156.25
  5. Step 5: Solve for x
    x = 160,490,375,156.25/259,402.50
  6. Step 6: Final answer
    x = 618,692.48

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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.