Finding the Fourth Proportional to 405,771.19, 559,990.16 and 226,923.19
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Solution
The fourth proportional to 405,771.19, 559,990.16 and 226,923.19 is: 313,168.49
Step by Step Solution
- Step 1: Write the proportion equation
405,771.19 : 559,990.16 = 226,923.19 : x - Step 2: Convert to fraction form
405,771.19/559,990.16 = 226,923.19/x - Step 3: Cross multiply
405,771.19x = 559,990.16 × 226,923.19 - Step 4: Simplify right side
405,771.19x = 127,074,751,792.18 - Step 5: Solve for x
x = 127,074,751,792.18/405,771.19 - Step 6: Final answer
x = 313,168.49
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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.