Finding the Fourth Proportional to 311,823.70, 430,316.70 and 168,583.74
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Solution
The fourth proportional to 311,823.70, 430,316.70 and 168,583.74 is: 232,645.56
Step by Step Solution
- Step 1: Write the proportion equation
311,823.70 : 430,316.70 = 168,583.74 : x - Step 2: Convert to fraction form
311,823.70/430,316.70 = 168,583.74/x - Step 3: Cross multiply
311,823.70x = 430,316.70 × 168,583.74 - Step 4: Simplify right side
311,823.70x = 72,544,400,117.81 - Step 5: Solve for x
x = 72,544,400,117.81/311,823.70 - Step 6: Final answer
x = 232,645.56
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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.