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Finding the Third Proportional to 130,894 and 210,009

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Solution

The third proportional to 130,894 and 210,009 is: 336,942.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,894 : 210,009 = 210,009 : x
  2. Step 2: Convert to fraction form
    130,894/210,009 = 210,009/x
  3. Step 3: Cross multiply
    130,894x = 210,009 × 210,009
  4. Step 4: Simplify right side
    130,894x = 44,103,780,081
  5. Step 5: Solve for x
    x = 44,103,780,081/130,894
  6. Step 6: Final answer
    x = 336,942.72

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.