Finding the Fourth Proportional to 312,391.15, 468,604.87 and 87,769.08
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Solution
The fourth proportional to 312,391.15, 468,604.87 and 87,769.08 is: 131,658.72
Step by Step Solution
- Step 1: Write the proportion equation
312,391.15 : 468,604.87 = 87,769.08 : x - Step 2: Convert to fraction form
312,391.15/468,604.87 = 87,769.08/x - Step 3: Cross multiply
312,391.15x = 468,604.87 × 87,769.08 - Step 4: Simplify right side
312,391.15x = 41,129,018,104.00 - Step 5: Solve for x
x = 41,129,018,104.00/312,391.15 - Step 6: Final answer
x = 131,658.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.