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Finding the Third Proportional to 253,710 and 557,640

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Solution

The third proportional to 253,710 and 557,640 is: 1,225,660.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,710 : 557,640 = 557,640 : x
  2. Step 2: Convert to fraction form
    253,710/557,640 = 557,640/x
  3. Step 3: Cross multiply
    253,710x = 557,640 × 557,640
  4. Step 4: Simplify right side
    253,710x = 310,962,369,600
  5. Step 5: Solve for x
    x = 310,962,369,600/253,710
  6. Step 6: Final answer
    x = 1,225,660.67

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.