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Finding the Third Proportional to 128,532 and 200,119

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Solution

The third proportional to 128,532 and 200,119 is: 311,576.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,532 : 200,119 = 200,119 : x
  2. Step 2: Convert to fraction form
    128,532/200,119 = 200,119/x
  3. Step 3: Cross multiply
    128,532x = 200,119 × 200,119
  4. Step 4: Simplify right side
    128,532x = 40,047,614,161
  5. Step 5: Solve for x
    x = 40,047,614,161/128,532
  6. Step 6: Final answer
    x = 311,576.99

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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.