Finding the Fourth Proportional to 212,121.78, 317,490.36 and 155,947.02
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Solution
The fourth proportional to 212,121.78, 317,490.36 and 155,947.02 is: 233,411.56
Step by Step Solution
- Step 1: Write the proportion equation
212,121.78 : 317,490.36 = 155,947.02 : x - Step 2: Convert to fraction form
212,121.78/317,490.36 = 155,947.02/x - Step 3: Cross multiply
212,121.78x = 317,490.36 × 155,947.02 - Step 4: Simplify right side
212,121.78x = 49,511,675,520.73 - Step 5: Solve for x
x = 49,511,675,520.73/212,121.78 - Step 6: Final answer
x = 233,411.56
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.