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Finding the Third Proportional to 190,403 and 413,578

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Solution

The third proportional to 190,403 and 413,578 is: 898,340.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,403 : 413,578 = 413,578 : x
  2. Step 2: Convert to fraction form
    190,403/413,578 = 413,578/x
  3. Step 3: Cross multiply
    190,403x = 413,578 × 413,578
  4. Step 4: Simplify right side
    190,403x = 171,046,762,084
  5. Step 5: Solve for x
    x = 171,046,762,084/190,403
  6. Step 6: Final answer
    x = 898,340.69

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.