Finding the Fourth Proportional to 256,312.94, 353,515.28 and 154,231.99
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Solution
The fourth proportional to 256,312.94, 353,515.28 and 154,231.99 is: 212,721.85
Step by Step Solution
- Step 1: Write the proportion equation
256,312.94 : 353,515.28 = 154,231.99 : x - Step 2: Convert to fraction form
256,312.94/353,515.28 = 154,231.99/x - Step 3: Cross multiply
256,312.94x = 353,515.28 × 154,231.99 - Step 4: Simplify right side
256,312.94x = 54,523,363,736.84 - Step 5: Solve for x
x = 54,523,363,736.84/256,312.94 - Step 6: Final answer
x = 212,721.85
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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.