Finding the Fourth Proportional to 312,449.99, 431,188.88 and 191,657.88
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Solution
The fourth proportional to 312,449.99, 431,188.88 and 191,657.88 is: 264,492.72
Step by Step Solution
- Step 1: Write the proportion equation
312,449.99 : 431,188.88 = 191,657.88 : x - Step 2: Convert to fraction form
312,449.99/431,188.88 = 191,657.88/x - Step 3: Cross multiply
312,449.99x = 431,188.88 × 191,657.88 - Step 4: Simplify right side
312,449.99x = 82,640,745,662.09 - Step 5: Solve for x
x = 82,640,745,662.09/312,449.99 - Step 6: Final answer
x = 264,492.72
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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.