Finding the Fourth Proportional to 311,884,343.40, 430,265,289.75 and 188,056,228.44
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Solution
The fourth proportional to 311,884,343.40, 430,265,289.75 and 188,056,228.44 is: 259,436,131.79
Step by Step Solution
- Step 1: Write the proportion equation
311,884,343.40 : 430,265,289.75 = 188,056,228.44 : x - Step 2: Convert to fraction form
311,884,343.40/430,265,289.75 = 188,056,228.44/x - Step 3: Cross multiply
311,884,343.40x = 430,265,289.75 × 188,056,228.44 - Step 4: Simplify right side
311,884,343.40x = 80,914,067,619,028,784 - Step 5: Solve for x
x = 80,914,067,619,028,784/311,884,343.40 - Step 6: Final answer
x = 259,436,131.79
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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.