Finding the Fourth Proportional to 311,688.54, 430,028.91 and 190,703.70
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Solution
The fourth proportional to 311,688.54, 430,028.91 and 190,703.70 is: 263,109.14
Step by Step Solution
- Step 1: Write the proportion equation
311,688.54 : 430,028.91 = 190,703.70 : x - Step 2: Convert to fraction form
311,688.54/430,028.91 = 190,703.70/x - Step 3: Cross multiply
311,688.54x = 430,028.91 × 190,703.70 - Step 4: Simplify right side
311,688.54x = 82,008,104,243.97 - Step 5: Solve for x
x = 82,008,104,243.97/311,688.54 - Step 6: Final answer
x = 263,109.14
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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.