Finding the Fourth Proportional to 311,409.12, 429,747.84 and 177,281.76
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Solution
The fourth proportional to 311,409.12, 429,747.84 and 177,281.76 is: 244,650.68
Step by Step Solution
- Step 1: Write the proportion equation
311,409.12 : 429,747.84 = 177,281.76 : x - Step 2: Convert to fraction form
311,409.12/429,747.84 = 177,281.76/x - Step 3: Cross multiply
311,409.12x = 429,747.84 × 177,281.76 - Step 4: Simplify right side
311,409.12x = 76,186,453,431.40 - Step 5: Solve for x
x = 76,186,453,431.40/311,409.12 - Step 6: Final answer
x = 244,650.68
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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.