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Finding the Fourth Proportional to 203,131.38, 304,510.44 and 69,979.98

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Solution

The fourth proportional to 203,131.38, 304,510.44 and 69,979.98 is: 104,905.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,131.38 : 304,510.44 = 69,979.98 : x
  2. Step 2: Convert to fraction form
    203,131.38/304,510.44 = 69,979.98/x
  3. Step 3: Cross multiply
    203,131.38x = 304,510.44 × 69,979.98
  4. Step 4: Simplify right side
    203,131.38x = 21,309,634,500.99
  5. Step 5: Solve for x
    x = 21,309,634,500.99/203,131.38
  6. Step 6: Final answer
    x = 104,905.67

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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.