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Finding the Third Proportional to 189,362 and 407,335

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Solution

The third proportional to 189,362 and 407,335 is: 876,214.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,362 : 407,335 = 407,335 : x
  2. Step 2: Convert to fraction form
    189,362/407,335 = 407,335/x
  3. Step 3: Cross multiply
    189,362x = 407,335 × 407,335
  4. Step 4: Simplify right side
    189,362x = 165,921,802,225
  5. Step 5: Solve for x
    x = 165,921,802,225/189,362
  6. Step 6: Final answer
    x = 876,214.88

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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.