Finding the Fourth Proportional to 221,465.98, 305,618.79 and 120,864.70
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Solution
The fourth proportional to 221,465.98, 305,618.79 and 120,864.70 is: 166,790.96
Step by Step Solution
- Step 1: Write the proportion equation
221,465.98 : 305,618.79 = 120,864.70 : x - Step 2: Convert to fraction form
221,465.98/305,618.79 = 120,864.70/x - Step 3: Cross multiply
221,465.98x = 305,618.79 × 120,864.70 - Step 4: Simplify right side
221,465.98x = 36,938,523,367.71 - Step 5: Solve for x
x = 36,938,523,367.71/221,465.98 - Step 6: Final answer
x = 166,790.96
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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.