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Finding the Third Proportional to 190,188 and 407,364

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Solution

The third proportional to 190,188 and 407,364 is: 872,533.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,188 : 407,364 = 407,364 : x
  2. Step 2: Convert to fraction form
    190,188/407,364 = 407,364/x
  3. Step 3: Cross multiply
    190,188x = 407,364 × 407,364
  4. Step 4: Simplify right side
    190,188x = 165,945,428,496
  5. Step 5: Solve for x
    x = 165,945,428,496/190,188
  6. Step 6: Final answer
    x = 872,533.64

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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.