Finding the Fourth Proportional to 311,183.70, 466,775.55 and 86,543.70
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Solution
The fourth proportional to 311,183.70, 466,775.55 and 86,543.70 is: 129,815.55
Step by Step Solution
- Step 1: Write the proportion equation
311,183.70 : 466,775.55 = 86,543.70 : x - Step 2: Convert to fraction form
311,183.70/466,775.55 = 86,543.70/x - Step 3: Cross multiply
311,183.70x = 466,775.55 × 86,543.70 - Step 4: Simplify right side
311,183.70x = 40,396,483,166.54 - Step 5: Solve for x
x = 40,396,483,166.54/311,183.70 - Step 6: Final answer
x = 129,815.55
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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.