Finding the Fourth Proportional to 231,512,506.36, 319,475,526.08 and 137,430,674.80
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Solution
The fourth proportional to 231,512,506.36, 319,475,526.08 and 137,430,674.80 is: 189,647,366.45
Step by Step Solution
- Step 1: Write the proportion equation
231,512,506.36 : 319,475,526.08 = 137,430,674.80 : x - Step 2: Convert to fraction form
231,512,506.36/319,475,526.08 = 137,430,674.80/x - Step 3: Cross multiply
231,512,506.36x = 319,475,526.08 × 137,430,674.80 - Step 4: Simplify right side
231,512,506.36x = 43,905,737,131,259,400 - Step 5: Solve for x
x = 43,905,737,131,259,400/231,512,506.36 - Step 6: Final answer
x = 189,647,366.45
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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.