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Finding the Fourth Proportional to 217,850.56, 300,638.88 and 122,364.16

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Solution

The fourth proportional to 217,850.56, 300,638.88 and 122,364.16 is: 168,865.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,850.56 : 300,638.88 = 122,364.16 : x
  2. Step 2: Convert to fraction form
    217,850.56/300,638.88 = 122,364.16/x
  3. Step 3: Cross multiply
    217,850.56x = 300,638.88 × 122,364.16
  4. Step 4: Simplify right side
    217,850.56x = 36,787,424,014.54
  5. Step 5: Solve for x
    x = 36,787,424,014.54/217,850.56
  6. Step 6: Final answer
    x = 168,865.41

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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.