Finding the Fourth Proportional to 311,964.96, 430,511.67 and 168,724.97
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Solution
The fourth proportional to 311,964.96, 430,511.67 and 168,724.97 is: 232,840.47
Step by Step Solution
- Step 1: Write the proportion equation
311,964.96 : 430,511.67 = 168,724.97 : x - Step 2: Convert to fraction form
311,964.96/430,511.67 = 168,724.97/x - Step 3: Cross multiply
311,964.96x = 430,511.67 × 168,724.97 - Step 4: Simplify right side
311,964.96x = 72,638,068,605.40 - Step 5: Solve for x
x = 72,638,068,605.40/311,964.96 - Step 6: Final answer
x = 232,840.47
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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.