Finding the Fourth Proportional to 378,745.20, 522,679.23 and 208,990.26
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Solution
The fourth proportional to 378,745.20, 522,679.23 and 208,990.26 is: 288,412.55
Step by Step Solution
- Step 1: Write the proportion equation
378,745.20 : 522,679.23 = 208,990.26 : x - Step 2: Convert to fraction form
378,745.20/522,679.23 = 208,990.26/x - Step 3: Cross multiply
378,745.20x = 522,679.23 × 208,990.26 - Step 4: Simplify right side
378,745.20x = 109,234,868,174.30 - Step 5: Solve for x
x = 109,234,868,174.30/378,745.20 - Step 6: Final answer
x = 288,412.55
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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.