Finding the Fourth Proportional to 311,731.63, 430,189.73 and 168,491.23
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Solution
The fourth proportional to 311,731.63, 430,189.73 and 168,491.23 is: 232,517.94
Step by Step Solution
- Step 1: Write the proportion equation
311,731.63 : 430,189.73 = 168,491.23 : x - Step 2: Convert to fraction form
311,731.63/430,189.73 = 168,491.23/x - Step 3: Cross multiply
311,731.63x = 430,189.73 × 168,491.23 - Step 4: Simplify right side
311,731.63x = 72,483,196,741.07 - Step 5: Solve for x
x = 72,483,196,741.07/311,731.63 - Step 6: Final answer
x = 232,517.94
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1.5x scale
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.