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Finding the Third Proportional to 248,043 and 393,279

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Solution

The third proportional to 248,043 and 393,279 is: 623,554.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,043 : 393,279 = 393,279 : x
  2. Step 2: Convert to fraction form
    248,043/393,279 = 393,279/x
  3. Step 3: Cross multiply
    248,043x = 393,279 × 393,279
  4. Step 4: Simplify right side
    248,043x = 154,668,371,841
  5. Step 5: Solve for x
    x = 154,668,371,841/248,043
  6. Step 6: Final answer
    x = 623,554.67

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.