Finding the Fourth Proportional to 207,415,115.20, 311,122,672.80 and 207,415,115.20
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Solution
The fourth proportional to 207,415,115.20, 311,122,672.80 and 207,415,115.20 is: 311,122,672.80
Step by Step Solution
- Step 1: Write the proportion equation
207,415,115.20 : 311,122,672.80 = 207,415,115.20 : x - Step 2: Convert to fraction form
207,415,115.20/311,122,672.80 = 207,415,115.20/x - Step 3: Cross multiply
207,415,115.20x = 311,122,672.80 × 207,415,115.20 - Step 4: Simplify right side
207,415,115.20x = 64,531,545,020,143,904 - Step 5: Solve for x
x = 64,531,545,020,143,904/207,415,115.20 - Step 6: Final answer
x = 311,122,672.80
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1.5x scale
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.