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Finding the Fourth Proportional to 217,751.95, 300,489.91 and 122,262.67

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Solution

The fourth proportional to 217,751.95, 300,489.91 and 122,262.67 is: 168,718.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,751.95 : 300,489.91 = 122,262.67 : x
  2. Step 2: Convert to fraction form
    217,751.95/300,489.91 = 122,262.67/x
  3. Step 3: Cross multiply
    217,751.95x = 300,489.91 × 122,262.67
  4. Step 4: Simplify right side
    217,751.95x = 36,738,698,704.66
  5. Step 5: Solve for x
    x = 36,738,698,704.66/217,751.95
  6. Step 6: Final answer
    x = 168,718.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.