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Finding the Fourth Proportional to 208,238.80, 311,920.80 and 173,246.80

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Solution

The fourth proportional to 208,238.80, 311,920.80 and 173,246.80 is: 259,506.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,238.80 : 311,920.80 = 173,246.80 : x
  2. Step 2: Convert to fraction form
    208,238.80/311,920.80 = 173,246.80/x
  3. Step 3: Cross multiply
    208,238.80x = 311,920.80 × 173,246.80
  4. Step 4: Simplify right side
    208,238.80x = 54,039,280,453.44
  5. Step 5: Solve for x
    x = 54,039,280,453.44/208,238.80
  6. Step 6: Final answer
    x = 259,506.30

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1.5x scale

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.