Home / 208,928.20-313,442.70-68,679.40

Finding the Fourth Proportional to 208,928.20, 313,442.70 and 68,679.40

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Solution

The fourth proportional to 208,928.20, 313,442.70 and 68,679.40 is: 103,035.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,928.20 : 313,442.70 = 68,679.40 : x
  2. Step 2: Convert to fraction form
    208,928.20/313,442.70 = 68,679.40/x
  3. Step 3: Cross multiply
    208,928.20x = 313,442.70 × 68,679.40
  4. Step 4: Simplify right side
    208,928.20x = 21,527,056,570.38
  5. Step 5: Solve for x
    x = 21,527,056,570.38/208,928.20
  6. Step 6: Final answer
    x = 103,035.67

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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.