Finding the Fourth Proportional to 231,512,505.36, 319,475,524.70 and 137,430,673.80
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Solution
The fourth proportional to 231,512,505.36, 319,475,524.70 and 137,430,673.80 is: 189,647,365.07
Step by Step Solution
- Step 1: Write the proportion equation
231,512,505.36 : 319,475,524.70 = 137,430,673.80 : x - Step 2: Convert to fraction form
231,512,505.36/319,475,524.70 = 137,430,673.80/x - Step 3: Cross multiply
231,512,505.36x = 319,475,524.70 × 137,430,673.80 - Step 4: Simplify right side
231,512,505.36x = 43,905,736,622,129,544 - Step 5: Solve for x
x = 43,905,736,622,129,544/231,512,505.36 - Step 6: Final answer
x = 189,647,365.07
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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.