Finding the Fourth Proportional to 816,128.21, 1,224,190.68 and 217,090.08
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Solution
The fourth proportional to 816,128.21, 1,224,190.68 and 217,090.08 is: 325,634.69
Step by Step Solution
- Step 1: Write the proportion equation
816,128.21 : 1,224,190.68 = 217,090.08 : x - Step 2: Convert to fraction form
816,128.21/1,224,190.68 = 217,090.08/x - Step 3: Cross multiply
816,128.21x = 1,224,190.68 × 217,090.08 - Step 4: Simplify right side
816,128.21x = 265,759,652,656.45 - Step 5: Solve for x
x = 265,759,652,656.45/816,128.21 - Step 6: Final answer
x = 325,634.69
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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.