Finding the Fourth Proportional to 355,373,585.34, 490,413,873.74 and 198,741,315.12
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Solution
The fourth proportional to 355,373,585.34, 490,413,873.74 and 198,741,315.12 is: 274,262,078.67
Step by Step Solution
- Step 1: Write the proportion equation
355,373,585.34 : 490,413,873.74 = 198,741,315.12 : x - Step 2: Convert to fraction form
355,373,585.34/490,413,873.74 = 198,741,315.12/x - Step 3: Cross multiply
355,373,585.34x = 490,413,873.74 × 198,741,315.12 - Step 4: Simplify right side
355,373,585.34x = 97,465,498,219,187,536 - Step 5: Solve for x
x = 97,465,498,219,187,536/355,373,585.34 - Step 6: Final answer
x = 274,262,078.67
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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.