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Finding the Fourth Proportional to 218,071.62, 300,937.19 and 122,578.70

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Solution

The fourth proportional to 218,071.62, 300,937.19 and 122,578.70 is: 169,157.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,071.62 : 300,937.19 = 122,578.70 : x
  2. Step 2: Convert to fraction form
    218,071.62/300,937.19 = 122,578.70/x
  3. Step 3: Cross multiply
    218,071.62x = 300,937.19 × 122,578.70
  4. Step 4: Simplify right side
    218,071.62x = 36,888,487,414.27
  5. Step 5: Solve for x
    x = 36,888,487,414.27/218,071.62
  6. Step 6: Final answer
    x = 169,157.67

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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.