Finding the Fourth Proportional to 256,120.67, 353,492.79 and 152,761.49
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Solution
The fourth proportional to 256,120.67, 353,492.79 and 152,761.49 is: 210,838.45
Step by Step Solution
- Step 1: Write the proportion equation
256,120.67 : 353,492.79 = 152,761.49 : x - Step 2: Convert to fraction form
256,120.67/353,492.79 = 152,761.49/x - Step 3: Cross multiply
256,120.67x = 353,492.79 × 152,761.49 - Step 4: Simplify right side
256,120.67x = 54,000,085,304.66 - Step 5: Solve for x
x = 54,000,085,304.66/256,120.67 - Step 6: Final answer
x = 210,838.45
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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.