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Finding the Third Proportional to 189,300 and 282,309

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Solution

The third proportional to 189,300 and 282,309 is: 421,016.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,300 : 282,309 = 282,309 : x
  2. Step 2: Convert to fraction form
    189,300/282,309 = 282,309/x
  3. Step 3: Cross multiply
    189,300x = 282,309 × 282,309
  4. Step 4: Simplify right side
    189,300x = 79,698,371,481
  5. Step 5: Solve for x
    x = 79,698,371,481/189,300
  6. Step 6: Final answer
    x = 421,016.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.