Finding the Fourth Proportional to 312,213.44, 430,861.20 and 176,221.28
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Solution
The fourth proportional to 312,213.44, 430,861.20 and 176,221.28 is: 243,189.12
Step by Step Solution
- Step 1: Write the proportion equation
312,213.44 : 430,861.20 = 176,221.28 : x - Step 2: Convert to fraction form
312,213.44/430,861.20 = 176,221.28/x - Step 3: Cross multiply
312,213.44x = 430,861.20 × 176,221.28 - Step 4: Simplify right side
312,213.44x = 75,926,912,166.34 - Step 5: Solve for x
x = 75,926,912,166.34/312,213.44 - Step 6: Final answer
x = 243,189.12
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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.