Finding the Fourth Proportional to 215,918.25, 297,967.68 and 120,431.09
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Solution
The fourth proportional to 215,918.25, 297,967.68 and 120,431.09 is: 166,195.18
Step by Step Solution
- Step 1: Write the proportion equation
215,918.25 : 297,967.68 = 120,431.09 : x - Step 2: Convert to fraction form
215,918.25/297,967.68 = 120,431.09/x - Step 3: Cross multiply
215,918.25x = 297,967.68 × 120,431.09 - Step 4: Simplify right side
215,918.25x = 35,884,572,487.17 - Step 5: Solve for x
x = 35,884,572,487.17/215,918.25 - Step 6: Final answer
x = 166,195.18
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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.