Finding the Fourth Proportional to 278,868,469.80, 418,302,704.70 and 248,257,468.20
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Solution
The fourth proportional to 278,868,469.80, 418,302,704.70 and 248,257,468.20 is: 372,386,202.30
Step by Step Solution
- Step 1: Write the proportion equation
278,868,469.80 : 418,302,704.70 = 248,257,468.20 : x - Step 2: Convert to fraction form
278,868,469.80/418,302,704.70 = 248,257,468.20/x - Step 3: Cross multiply
278,868,469.80x = 418,302,704.70 × 248,257,468.20 - Step 4: Simplify right side
278,868,469.80x = 103,846,770,410,034,240 - Step 5: Solve for x
x = 103,846,770,410,034,240/278,868,469.80 - Step 6: Final answer
x = 372,386,202.30
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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.