Finding the Fourth Proportional to 215,753.94, 297,690.93 and 129,673.62
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Solution
The fourth proportional to 215,753.94, 297,690.93 and 129,673.62 is: 178,919.84
Step by Step Solution
- Step 1: Write the proportion equation
215,753.94 : 297,690.93 = 129,673.62 : x - Step 2: Convert to fraction form
215,753.94/297,690.93 = 129,673.62/x - Step 3: Cross multiply
215,753.94x = 297,690.93 × 129,673.62 - Step 4: Simplify right side
215,753.94x = 38,602,660,534.27 - Step 5: Solve for x
x = 38,602,660,534.27/215,753.94 - Step 6: Final answer
x = 178,919.84
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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.