Finding the Fourth Proportional to 396,979.36, 547,833.76 and 215,692.75
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Solution
The fourth proportional to 396,979.36, 547,833.76 and 215,692.75 is: 297,657.21
Step by Step Solution
- Step 1: Write the proportion equation
396,979.36 : 547,833.76 = 215,692.75 : x - Step 2: Convert to fraction form
396,979.36/547,833.76 = 215,692.75/x - Step 3: Cross multiply
396,979.36x = 547,833.76 × 215,692.75 - Step 4: Simplify right side
396,979.36x = 118,163,770,237.24 - Step 5: Solve for x
x = 118,163,770,237.24/396,979.36 - Step 6: Final answer
x = 297,657.21
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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.