Finding the Fourth Proportional to 311,905,761.60, 430,413,585.12 and 170,749,921.44
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Solution
The fourth proportional to 311,905,761.60, 430,413,585.12 and 170,749,921.44 is: 235,625,932.23
Step by Step Solution
- Step 1: Write the proportion equation
311,905,761.60 : 430,413,585.12 = 170,749,921.44 : x - Step 2: Convert to fraction form
311,905,761.60/430,413,585.12 = 170,749,921.44/x - Step 3: Cross multiply
311,905,761.60x = 430,413,585.12 × 170,749,921.44 - Step 4: Simplify right side
311,905,761.60x = 73,493,085,845,948,752 - Step 5: Solve for x
x = 73,493,085,845,948,752/311,905,761.60 - Step 6: Final answer
x = 235,625,932.23
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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.