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Finding the Fourth Proportional to 212,474.76, 318,908.94 and 107,367.48

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Solution

The fourth proportional to 212,474.76, 318,908.94 and 107,367.48 is: 161,150.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,474.76 : 318,908.94 = 107,367.48 : x
  2. Step 2: Convert to fraction form
    212,474.76/318,908.94 = 107,367.48/x
  3. Step 3: Cross multiply
    212,474.76x = 318,908.94 × 107,367.48
  4. Step 4: Simplify right side
    212,474.76x = 34,240,449,237.27
  5. Step 5: Solve for x
    x = 34,240,449,237.27/212,474.76
  6. Step 6: Final answer
    x = 161,150.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.