Finding the Fourth Proportional to 298,128.69, 411,380.17 and 201,542.65
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Solution
The fourth proportional to 298,128.69, 411,380.17 and 201,542.65 is: 278,103.55
Step by Step Solution
- Step 1: Write the proportion equation
298,128.69 : 411,380.17 = 201,542.65 : x - Step 2: Convert to fraction form
298,128.69/411,380.17 = 201,542.65/x - Step 3: Cross multiply
298,128.69x = 411,380.17 × 201,542.65 - Step 4: Simplify right side
298,128.69x = 82,910,647,562.35 - Step 5: Solve for x
x = 82,910,647,562.35/298,128.69 - Step 6: Final answer
x = 278,103.55
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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.