Finding the Fourth Proportional to 311,670.18, 430,104.96 and 168,430.14
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Solution
The fourth proportional to 311,670.18, 430,104.96 and 168,430.14 is: 232,433.65
Step by Step Solution
- Step 1: Write the proportion equation
311,670.18 : 430,104.96 = 168,430.14 : x - Step 2: Convert to fraction form
311,670.18/430,104.96 = 168,430.14/x - Step 3: Cross multiply
311,670.18x = 430,104.96 × 168,430.14 - Step 4: Simplify right side
311,670.18x = 72,442,638,627.49 - Step 5: Solve for x
x = 72,442,638,627.49/311,670.18 - Step 6: Final answer
x = 232,433.65
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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.