Finding the Fourth Proportional to 395,090.13, 545,220.23 and 213,798.09
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Solution
The fourth proportional to 395,090.13, 545,220.23 and 213,798.09 is: 295,039.12
Step by Step Solution
- Step 1: Write the proportion equation
395,090.13 : 545,220.23 = 213,798.09 : x - Step 2: Convert to fraction form
395,090.13/545,220.23 = 213,798.09/x - Step 3: Cross multiply
395,090.13x = 545,220.23 × 213,798.09 - Step 4: Simplify right side
395,090.13x = 116,567,042,734.37 - Step 5: Solve for x
x = 116,567,042,734.37/395,090.13 - Step 6: Final answer
x = 295,039.12
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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.