Finding the Fourth Proportional to 378,431.26, 521,692.50 and 297,718.63
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Solution
The fourth proportional to 378,431.26, 521,692.50 and 297,718.63 is: 410,424.81
Step by Step Solution
- Step 1: Write the proportion equation
378,431.26 : 521,692.50 = 297,718.63 : x - Step 2: Convert to fraction form
378,431.26/521,692.50 = 297,718.63/x - Step 3: Cross multiply
378,431.26x = 521,692.50 × 297,718.63 - Step 4: Simplify right side
378,431.26x = 155,317,576,381.28 - Step 5: Solve for x
x = 155,317,576,381.28/378,431.26 - Step 6: Final answer
x = 410,424.81
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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.