Finding the Fourth Proportional to 311,751.72, 430,217.28 and 168,511.68
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Solution
The fourth proportional to 311,751.72, 430,217.28 and 168,511.68 is: 232,546.07
Step by Step Solution
- Step 1: Write the proportion equation
311,751.72 : 430,217.28 = 168,511.68 : x - Step 2: Convert to fraction form
311,751.72/430,217.28 = 168,511.68/x - Step 3: Cross multiply
311,751.72x = 430,217.28 × 168,511.68 - Step 4: Simplify right side
311,751.72x = 72,496,636,617.83 - Step 5: Solve for x
x = 72,496,636,617.83/311,751.72 - Step 6: Final answer
x = 232,546.07
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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.