Finding the Fourth Proportional to 305,005.18, 420,899.97 and 177,672.55
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Solution
The fourth proportional to 305,005.18, 420,899.97 and 177,672.55 is: 245,183.94
Step by Step Solution
- Step 1: Write the proportion equation
305,005.18 : 420,899.97 = 177,672.55 : x - Step 2: Convert to fraction form
305,005.18/420,899.97 = 177,672.55/x - Step 3: Cross multiply
305,005.18x = 420,899.97 × 177,672.55 - Step 4: Simplify right side
305,005.18x = 74,782,370,964.82 - Step 5: Solve for x
x = 74,782,370,964.82/305,005.18 - Step 6: Final answer
x = 245,183.94
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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.