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Finding the Fourth Proportional to 217,611.66, 300,325.67 and 122,118.73

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Solution

The fourth proportional to 217,611.66, 300,325.67 and 122,118.73 is: 168,535.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,611.66 : 300,325.67 = 122,118.73 : x
  2. Step 2: Convert to fraction form
    217,611.66/300,325.67 = 122,118.73/x
  3. Step 3: Cross multiply
    217,611.66x = 300,325.67 × 122,118.73
  4. Step 4: Simplify right side
    217,611.66x = 36,675,389,406.80
  5. Step 5: Solve for x
    x = 36,675,389,406.80/217,611.66
  6. Step 6: Final answer
    x = 168,535.96

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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.