Finding the Fourth Proportional to 339,791.70, 509,917.26 and 129,424.14
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Solution
The fourth proportional to 339,791.70, 509,917.26 and 129,424.14 is: 194,223.70
Step by Step Solution
- Step 1: Write the proportion equation
339,791.70 : 509,917.26 = 129,424.14 : x - Step 2: Convert to fraction form
339,791.70/509,917.26 = 129,424.14/x - Step 3: Cross multiply
339,791.70x = 509,917.26 × 129,424.14 - Step 4: Simplify right side
339,791.70x = 65,995,602,846.66 - Step 5: Solve for x
x = 65,995,602,846.66/339,791.70 - Step 6: Final answer
x = 194,223.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.