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Finding the Third Proportional to 128,467.69 and 276,620.06

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Solution

The third proportional to 128,467.69 and 276,620.06 is: 595,625.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,467.69 : 276,620.06 = 276,620.06 : x
  2. Step 2: Convert to fraction form
    128,467.69/276,620.06 = 276,620.06/x
  3. Step 3: Cross multiply
    128,467.69x = 276,620.06 × 276,620.06
  4. Step 4: Simplify right side
    128,467.69x = 76,518,658,977.50
  5. Step 5: Solve for x
    x = 76,518,658,977.50/128,467.69
  6. Step 6: Final answer
    x = 595,625.72

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.