Finding the Fourth Proportional to 215,933.13, 297,988.05 and 120,445.94
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Solution
The fourth proportional to 215,933.13, 297,988.05 and 120,445.94 is: 166,215.57
Step by Step Solution
- Step 1: Write the proportion equation
215,933.13 : 297,988.05 = 120,445.94 : x - Step 2: Convert to fraction form
215,933.13/297,988.05 = 120,445.94/x - Step 3: Cross multiply
215,933.13x = 297,988.05 × 120,445.94 - Step 4: Simplify right side
215,933.13x = 35,891,449,301.08 - Step 5: Solve for x
x = 35,891,449,301.08/215,933.13 - Step 6: Final answer
x = 166,215.57
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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.