Finding the Fourth Proportional to 215,909.74, 297,955.97 and 120,422.62
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Solution
The fourth proportional to 215,909.74, 297,955.97 and 120,422.62 is: 166,183.51
Step by Step Solution
- Step 1: Write the proportion equation
215,909.74 : 297,955.97 = 120,422.62 : x - Step 2: Convert to fraction form
215,909.74/297,955.97 = 120,422.62/x - Step 3: Cross multiply
215,909.74x = 297,955.97 × 120,422.62 - Step 4: Simplify right side
215,909.74x = 35,880,638,552.04 - Step 5: Solve for x
x = 35,880,638,552.04/215,909.74 - Step 6: Final answer
x = 166,183.51
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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.