Finding the Fourth Proportional to 352,685,631.13, 486,647,340.42 and 196,031,438.98
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Solution
The fourth proportional to 352,685,631.13, 486,647,340.42 and 196,031,438.98 is: 270,490,686.32
Step by Step Solution
- Step 1: Write the proportion equation
352,685,631.13 : 486,647,340.42 = 196,031,438.98 : x - Step 2: Convert to fraction form
352,685,631.13/486,647,340.42 = 196,031,438.98/x - Step 3: Cross multiply
352,685,631.13x = 486,647,340.42 × 196,031,438.98 - Step 4: Simplify right side
352,685,631.13x = 95,398,178,418,322,512 - Step 5: Solve for x
x = 95,398,178,418,322,512/352,685,631.13 - Step 6: Final answer
x = 270,490,686.32
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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.