Finding the Fourth Proportional to 221,330.95, 305,436.69 and 120,728.95
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Solution
The fourth proportional to 221,330.95, 305,436.69 and 120,728.95 is: 166,605.94
Step by Step Solution
- Step 1: Write the proportion equation
221,330.95 : 305,436.69 = 120,728.95 : x - Step 2: Convert to fraction form
221,330.95/305,436.69 = 120,728.95/x - Step 3: Cross multiply
221,330.95x = 305,436.69 × 120,728.95 - Step 4: Simplify right side
221,330.95x = 36,875,049,347.99 - Step 5: Solve for x
x = 36,875,049,347.99/221,330.95 - Step 6: Final answer
x = 166,605.94
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1.5x scale
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.