Finding the Fourth Proportional to 388,245.12, 535,776.56 and 218,482.08
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Solution
The fourth proportional to 388,245.12, 535,776.56 and 218,482.08 is: 301,504.31
Step by Step Solution
- Step 1: Write the proportion equation
388,245.12 : 535,776.56 = 218,482.08 : x - Step 2: Convert to fraction form
388,245.12/535,776.56 = 218,482.08/x - Step 3: Cross multiply
388,245.12x = 535,776.56 × 218,482.08 - Step 4: Simplify right side
388,245.12x = 117,057,577,244.05 - Step 5: Solve for x
x = 117,057,577,244.05/388,245.12 - Step 6: Final answer
x = 301,504.31
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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.