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Finding the Third Proportional to 190,609 and 407,448

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Solution

The third proportional to 190,609 and 407,448 is: 870,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,609 : 407,448 = 407,448 : x
  2. Step 2: Convert to fraction form
    190,609/407,448 = 407,448/x
  3. Step 3: Cross multiply
    190,609x = 407,448 × 407,448
  4. Step 4: Simplify right side
    190,609x = 166,013,872,704
  5. Step 5: Solve for x
    x = 166,013,872,704/190,609
  6. Step 6: Final answer
    x = 870,965.55

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.