Finding the Fourth Proportional to 229,371.05, 316,532.05 and 128,769.05
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Solution
The fourth proportional to 229,371.05, 316,532.05 and 128,769.05 is: 177,701.29
Step by Step Solution
- Step 1: Write the proportion equation
229,371.05 : 316,532.05 = 128,769.05 : x - Step 2: Convert to fraction form
229,371.05/316,532.05 = 128,769.05/x - Step 3: Cross multiply
229,371.05x = 316,532.05 × 128,769.05 - Step 4: Simplify right side
229,371.05x = 40,759,530,786.29 - Step 5: Solve for x
x = 40,759,530,786.29/229,371.05 - Step 6: Final answer
x = 177,701.29
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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.