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Finding the Third Proportional to 189,210 and 284,612

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Solution

The third proportional to 189,210 and 284,612 is: 428,116.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,210 : 284,612 = 284,612 : x
  2. Step 2: Convert to fraction form
    189,210/284,612 = 284,612/x
  3. Step 3: Cross multiply
    189,210x = 284,612 × 284,612
  4. Step 4: Simplify right side
    189,210x = 81,003,990,544
  5. Step 5: Solve for x
    x = 81,003,990,544/189,210
  6. Step 6: Final answer
    x = 428,116.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.