Finding the Fourth Proportional to 352,685,630.63, 486,647,339.73 and 196,031,438.48
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Solution
The fourth proportional to 352,685,630.63, 486,647,339.73 and 196,031,438.48 is: 270,490,685.63
Step by Step Solution
- Step 1: Write the proportion equation
352,685,630.63 : 486,647,339.73 = 196,031,438.48 : x - Step 2: Convert to fraction form
352,685,630.63/486,647,339.73 = 196,031,438.48/x - Step 3: Cross multiply
352,685,630.63x = 486,647,339.73 × 196,031,438.48 - Step 4: Simplify right side
352,685,630.63x = 95,398,178,039,737,152 - Step 5: Solve for x
x = 95,398,178,039,737,152/352,685,630.63 - Step 6: Final answer
x = 270,490,685.63
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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.