Finding the Fourth Proportional to 255,393.19, 382,482.88 and 128,634.67
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Solution
The fourth proportional to 255,393.19, 382,482.88 and 128,634.67 is: 192,646.32
Step by Step Solution
- Step 1: Write the proportion equation
255,393.19 : 382,482.88 = 128,634.67 : x - Step 2: Convert to fraction form
255,393.19/382,482.88 = 128,634.67/x - Step 3: Cross multiply
255,393.19x = 382,482.88 × 128,634.67 - Step 4: Simplify right side
255,393.19x = 49,200,559,205.97 - Step 5: Solve for x
x = 49,200,559,205.97/255,393.19 - Step 6: Final answer
x = 192,646.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.