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Finding the Third Proportional to 189,122 and 403,276

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Solution

The third proportional to 189,122 and 403,276 is: 859,929.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,122 : 403,276 = 403,276 : x
  2. Step 2: Convert to fraction form
    189,122/403,276 = 403,276/x
  3. Step 3: Cross multiply
    189,122x = 403,276 × 403,276
  4. Step 4: Simplify right side
    189,122x = 162,631,532,176
  5. Step 5: Solve for x
    x = 162,631,532,176/189,122
  6. Step 6: Final answer
    x = 859,929.21

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.