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Finding the Third Proportional to 189,480 and 409,320

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Solution

The third proportional to 189,480 and 409,320 is: 884,224.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,480 : 409,320 = 409,320 : x
  2. Step 2: Convert to fraction form
    189,480/409,320 = 409,320/x
  3. Step 3: Cross multiply
    189,480x = 409,320 × 409,320
  4. Step 4: Simplify right side
    189,480x = 167,542,862,400
  5. Step 5: Solve for x
    x = 167,542,862,400/189,480
  6. Step 6: Final answer
    x = 884,224.52

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.