Finding the Fourth Proportional to 208,319.91, 312,415.39 and 75,183.31
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Solution
The fourth proportional to 208,319.91, 312,415.39 and 75,183.31 is: 112,751.70
Step by Step Solution
- Step 1: Write the proportion equation
208,319.91 : 312,415.39 = 75,183.31 : x - Step 2: Convert to fraction form
208,319.91/312,415.39 = 75,183.31/x - Step 3: Cross multiply
208,319.91x = 312,415.39 × 75,183.31 - Step 4: Simplify right side
208,319.91x = 23,488,423,115.14 - Step 5: Solve for x
x = 23,488,423,115.14/208,319.91 - Step 6: Final answer
x = 112,751.70
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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.