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Finding the Third Proportional to 190,612.50 and 407,455.50

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Solution

The third proportional to 190,612.50 and 407,455.50 is: 870,981.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,612.50 : 407,455.50 = 407,455.50 : x
  2. Step 2: Convert to fraction form
    190,612.50/407,455.50 = 407,455.50/x
  3. Step 3: Cross multiply
    190,612.50x = 407,455.50 × 407,455.50
  4. Step 4: Simplify right side
    190,612.50x = 166,019,984,480.25
  5. Step 5: Solve for x
    x = 166,019,984,480.25/190,612.50
  6. Step 6: Final answer
    x = 870,981.62

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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.