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Finding the Third Proportional to 257,212.50 and 400,537.50

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Solution

The third proportional to 257,212.50 and 400,537.50 is: 623,726.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,212.50 : 400,537.50 = 400,537.50 : x
  2. Step 2: Convert to fraction form
    257,212.50/400,537.50 = 400,537.50/x
  3. Step 3: Cross multiply
    257,212.50x = 400,537.50 × 400,537.50
  4. Step 4: Simplify right side
    257,212.50x = 160,430,288,906.25
  5. Step 5: Solve for x
    x = 160,430,288,906.25/257,212.50
  6. Step 6: Final answer
    x = 623,726.64

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.