Finding the Fourth Proportional to 312,180.62, 430,809.26 and 168,940.70
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Solution
The fourth proportional to 312,180.62, 430,809.26 and 168,940.70 is: 233,138.17
Step by Step Solution
- Step 1: Write the proportion equation
312,180.62 : 430,809.26 = 168,940.70 : x - Step 2: Convert to fraction form
312,180.62/430,809.26 = 168,940.70/x - Step 3: Cross multiply
312,180.62x = 430,809.26 × 168,940.70 - Step 4: Simplify right side
312,180.62x = 72,781,217,950.88 - Step 5: Solve for x
x = 72,781,217,950.88/312,180.62 - Step 6: Final answer
x = 233,138.17
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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.