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Finding the Third Proportional to 100,756.50 and 219,603

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Solution

The third proportional to 100,756.50 and 219,603 is: 478,633.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,756.50 : 219,603 = 219,603 : x
  2. Step 2: Convert to fraction form
    100,756.50/219,603 = 219,603/x
  3. Step 3: Cross multiply
    100,756.50x = 219,603 × 219,603
  4. Step 4: Simplify right side
    100,756.50x = 48,225,477,609
  5. Step 5: Solve for x
    x = 48,225,477,609/100,756.50
  6. Step 6: Final answer
    x = 478,633.91

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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.