Finding the Fourth Proportional to 312,211.60, 430,745.84 and 176,229.52
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Solution
The fourth proportional to 312,211.60, 430,745.84 and 176,229.52 is: 243,136.81
Step by Step Solution
- Step 1: Write the proportion equation
312,211.60 : 430,745.84 = 176,229.52 : x - Step 2: Convert to fraction form
312,211.60/430,745.84 = 176,229.52/x - Step 3: Cross multiply
312,211.60x = 430,745.84 × 176,229.52 - Step 4: Simplify right side
312,211.60x = 75,910,132,625.20 - Step 5: Solve for x
x = 75,910,132,625.20/312,211.60 - Step 6: Final answer
x = 243,136.81
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1.5x scale
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.