Finding the Fourth Proportional to 275,238.12, 379,738.88 and 160,490.80
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Solution
The fourth proportional to 275,238.12, 379,738.88 and 160,490.80 is: 221,424.99
Step by Step Solution
- Step 1: Write the proportion equation
275,238.12 : 379,738.88 = 160,490.80 : x - Step 2: Convert to fraction form
275,238.12/379,738.88 = 160,490.80/x - Step 3: Cross multiply
275,238.12x = 379,738.88 × 160,490.80 - Step 4: Simplify right side
275,238.12x = 60,944,596,642.30 - Step 5: Solve for x
x = 60,944,596,642.30/275,238.12 - Step 6: Final answer
x = 221,424.99
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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.