Finding the Fourth Proportional to 438,783.40, 657,980.70 and 202,198.60
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Solution
The fourth proportional to 438,783.40, 657,980.70 and 202,198.60 is: 303,208.32
Step by Step Solution
- Step 1: Write the proportion equation
438,783.40 : 657,980.70 = 202,198.60 : x - Step 2: Convert to fraction form
438,783.40/657,980.70 = 202,198.60/x - Step 3: Cross multiply
438,783.40x = 657,980.70 × 202,198.60 - Step 4: Simplify right side
438,783.40x = 133,042,776,367.02 - Step 5: Solve for x
x = 133,042,776,367.02/438,783.40 - Step 6: Final answer
x = 303,208.32
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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.