Finding the Fourth Proportional to 311,947.75, 468,128.99 and 114,955.75
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Solution
The fourth proportional to 311,947.75, 468,128.99 and 114,955.75 is: 172,510.04
Step by Step Solution
- Step 1: Write the proportion equation
311,947.75 : 468,128.99 = 114,955.75 : x - Step 2: Convert to fraction form
311,947.75/468,128.99 = 114,955.75/x - Step 3: Cross multiply
311,947.75x = 468,128.99 × 114,955.75 - Step 4: Simplify right side
311,947.75x = 53,814,119,142.19 - Step 5: Solve for x
x = 53,814,119,142.19/311,947.75 - Step 6: Final answer
x = 172,510.04
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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.