Finding the Fourth Proportional to 311,837.68, 430,532.76 and 216,310.96
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Solution
The fourth proportional to 311,837.68, 430,532.76 and 216,310.96 is: 298,645.61
Step by Step Solution
- Step 1: Write the proportion equation
311,837.68 : 430,532.76 = 216,310.96 : x - Step 2: Convert to fraction form
311,837.68/430,532.76 = 216,310.96/x - Step 3: Cross multiply
311,837.68x = 430,532.76 × 216,310.96 - Step 4: Simplify right side
311,837.68x = 93,128,954,627.05 - Step 5: Solve for x
x = 93,128,954,627.05/311,837.68 - Step 6: Final answer
x = 298,645.61
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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.