Finding the Fourth Proportional to 221,561.79, 305,753.70 and 120,959.79
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Solution
The fourth proportional to 221,561.79, 305,753.70 and 120,959.79 is: 166,923.65
Step by Step Solution
- Step 1: Write the proportion equation
221,561.79 : 305,753.70 = 120,959.79 : x - Step 2: Convert to fraction form
221,561.79/305,753.70 = 120,959.79/x - Step 3: Cross multiply
221,561.79x = 305,753.70 × 120,959.79 - Step 4: Simplify right side
221,561.79x = 36,983,903,343.72 - Step 5: Solve for x
x = 36,983,903,343.72/221,561.79 - Step 6: Final answer
x = 166,923.65
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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.