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Finding the Fourth Proportional to 253,879.38, 350,351.36 and 139,164.40

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Solution

The fourth proportional to 253,879.38, 350,351.36 and 139,164.40 is: 192,045.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,879.38 : 350,351.36 = 139,164.40 : x
  2. Step 2: Convert to fraction form
    253,879.38/350,351.36 = 139,164.40/x
  3. Step 3: Cross multiply
    253,879.38x = 350,351.36 × 139,164.40
  4. Step 4: Simplify right side
    253,879.38x = 48,756,436,803.58
  5. Step 5: Solve for x
    x = 48,756,436,803.58/253,879.38
  6. Step 6: Final answer
    x = 192,045.67

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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.