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Finding the Third Proportional to 120,768 and 256,152

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Solution

The third proportional to 120,768 and 256,152 is: 543,304.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,768 : 256,152 = 256,152 : x
  2. Step 2: Convert to fraction form
    120,768/256,152 = 256,152/x
  3. Step 3: Cross multiply
    120,768x = 256,152 × 256,152
  4. Step 4: Simplify right side
    120,768x = 65,613,847,104
  5. Step 5: Solve for x
    x = 65,613,847,104/120,768
  6. Step 6: Final answer
    x = 543,304.91

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.