Finding the Fourth Proportional to 221,666.13, 305,901.20 and 126,178.96
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Solution
The fourth proportional to 221,666.13, 305,901.20 and 126,178.96 is: 174,128.07
Step by Step Solution
- Step 1: Write the proportion equation
221,666.13 : 305,901.20 = 126,178.96 : x - Step 2: Convert to fraction form
221,666.13/305,901.20 = 126,178.96/x - Step 3: Cross multiply
221,666.13x = 305,901.20 × 126,178.96 - Step 4: Simplify right side
221,666.13x = 38,598,295,278.75 - Step 5: Solve for x
x = 38,598,295,278.75/221,666.13 - Step 6: Final answer
x = 174,128.07
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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.