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Finding the Third Proportional to 130,938 and 285,210

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Solution

The third proportional to 130,938 and 285,210 is: 621,246.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,938 : 285,210 = 285,210 : x
  2. Step 2: Convert to fraction form
    130,938/285,210 = 285,210/x
  3. Step 3: Cross multiply
    130,938x = 285,210 × 285,210
  4. Step 4: Simplify right side
    130,938x = 81,344,744,100
  5. Step 5: Solve for x
    x = 81,344,744,100/130,938
  6. Step 6: Final answer
    x = 621,246.27

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.