Finding the Fourth Proportional to 217,309.10, 325,854.30 and 128,589.80
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Solution
The fourth proportional to 217,309.10, 325,854.30 and 128,589.80 is: 192,819.99
Step by Step Solution
- Step 1: Write the proportion equation
217,309.10 : 325,854.30 = 128,589.80 : x - Step 2: Convert to fraction form
217,309.10/325,854.30 = 128,589.80/x - Step 3: Cross multiply
217,309.10x = 325,854.30 × 128,589.80 - Step 4: Simplify right side
217,309.10x = 41,901,539,266.14 - Step 5: Solve for x
x = 41,901,539,266.14/217,309.10 - Step 6: Final answer
x = 192,819.99
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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.