Finding the Fourth Proportional to 311,876,458.02, 430,392,913.29 and 172,649,544.84
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Solution
The fourth proportional to 311,876,458.02, 430,392,913.29 and 172,649,544.84 is: 238,258,254.74
Step by Step Solution
- Step 1: Write the proportion equation
311,876,458.02 : 430,392,913.29 = 172,649,544.84 : x - Step 2: Convert to fraction form
311,876,458.02/430,392,913.29 = 172,649,544.84/x - Step 3: Cross multiply
311,876,458.02x = 430,392,913.29 × 172,649,544.84 - Step 4: Simplify right side
311,876,458.02x = 74,307,140,581,880,096 - Step 5: Solve for x
x = 74,307,140,581,880,096/311,876,458.02 - Step 6: Final answer
x = 238,258,254.74
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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.