Finding the Fourth Proportional to 311,911.36, 430,437.72 and 168,671.44
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Solution
The fourth proportional to 311,911.36, 430,437.72 and 168,671.44 is: 232,766.61
Step by Step Solution
- Step 1: Write the proportion equation
311,911.36 : 430,437.72 = 168,671.44 : x - Step 2: Convert to fraction form
311,911.36/430,437.72 = 168,671.44/x - Step 3: Cross multiply
311,911.36x = 430,437.72 × 168,671.44 - Step 4: Simplify right side
311,911.36x = 72,602,550,062.72 - Step 5: Solve for x
x = 72,602,550,062.72/311,911.36 - Step 6: Final answer
x = 232,766.61
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1.5x scale
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.