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Finding the Third Proportional to 138,942.84 and 298,950.75

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Solution

The third proportional to 138,942.84 and 298,950.75 is: 643,225.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,942.84 : 298,950.75 = 298,950.75 : x
  2. Step 2: Convert to fraction form
    138,942.84/298,950.75 = 298,950.75/x
  3. Step 3: Cross multiply
    138,942.84x = 298,950.75 × 298,950.75
  4. Step 4: Simplify right side
    138,942.84x = 89,371,550,925.56
  5. Step 5: Solve for x
    x = 89,371,550,925.56/138,942.84
  6. Step 6: Final answer
    x = 643,225.29

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.