Finding the Fourth Proportional to 215,123.04, 296,809.79 and 129,028.14
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Solution
The fourth proportional to 215,123.04, 296,809.79 and 129,028.14 is: 178,022.84
Step by Step Solution
- Step 1: Write the proportion equation
215,123.04 : 296,809.79 = 129,028.14 : x - Step 2: Convert to fraction form
215,123.04/296,809.79 = 129,028.14/x - Step 3: Cross multiply
215,123.04x = 296,809.79 × 129,028.14 - Step 4: Simplify right side
215,123.04x = 38,296,814,492.35 - Step 5: Solve for x
x = 38,296,814,492.35/215,123.04 - Step 6: Final answer
x = 178,022.84
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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.