Finding the Fourth Proportional to 189,238.50, 283,857.80 and 76,979.79
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Solution
The fourth proportional to 189,238.50, 283,857.80 and 76,979.79 is: 115,469.70
Step by Step Solution
- Step 1: Write the proportion equation
189,238.50 : 283,857.80 = 76,979.79 : x - Step 2: Convert to fraction form
189,238.50/283,857.80 = 76,979.79/x - Step 3: Cross multiply
189,238.50x = 283,857.80 × 76,979.79 - Step 4: Simplify right side
189,238.50x = 21,851,313,448.96 - Step 5: Solve for x
x = 21,851,313,448.96/189,238.50 - Step 6: Final answer
x = 115,469.70
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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.