Finding the Fourth Proportional to 221,028.75, 305,019.68 and 120,426.75
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Solution
The fourth proportional to 221,028.75, 305,019.68 and 120,426.75 is: 166,188.92
Step by Step Solution
- Step 1: Write the proportion equation
221,028.75 : 305,019.68 = 120,426.75 : x - Step 2: Convert to fraction form
221,028.75/305,019.68 = 120,426.75/x - Step 3: Cross multiply
221,028.75x = 305,019.68 × 120,426.75 - Step 4: Simplify right side
221,028.75x = 36,732,528,146.31 - Step 5: Solve for x
x = 36,732,528,146.31/221,028.75 - Step 6: Final answer
x = 166,188.92
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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.