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Finding the Fourth Proportional to 217,626.93, 300,334.54 and 120,830.79

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Solution

The fourth proportional to 217,626.93, 300,334.54 and 120,830.79 is: 166,751.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,626.93 : 300,334.54 = 120,830.79 : x
  2. Step 2: Convert to fraction form
    217,626.93/300,334.54 = 120,830.79/x
  3. Step 3: Cross multiply
    217,626.93x = 300,334.54 × 120,830.79
  4. Step 4: Simplify right side
    217,626.93x = 36,289,658,230.81
  5. Step 5: Solve for x
    x = 36,289,658,230.81/217,626.93
  6. Step 6: Final answer
    x = 166,751.69

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1.5x scale

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.