Finding the Fourth Proportional to 264,256,431.80, 396,384,647.70 and 72,780,207.80
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Solution
The fourth proportional to 264,256,431.80, 396,384,647.70 and 72,780,207.80 is: 109,170,311.70
Step by Step Solution
- Step 1: Write the proportion equation
264,256,431.80 : 396,384,647.70 = 72,780,207.80 : x - Step 2: Convert to fraction form
264,256,431.80/396,384,647.70 = 72,780,207.80/x - Step 3: Cross multiply
264,256,431.80x = 396,384,647.70 × 72,780,207.80 - Step 4: Simplify right side
264,256,431.80x = 28,848,957,028,335,792 - Step 5: Solve for x
x = 28,848,957,028,335,792/264,256,431.80 - Step 6: Final answer
x = 109,170,311.70
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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.