Finding the Fourth Proportional to 221,595.75, 305,802.95 and 120,993.75
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Solution
The fourth proportional to 221,595.75, 305,802.95 and 120,993.75 is: 166,971.82
Step by Step Solution
- Step 1: Write the proportion equation
221,595.75 : 305,802.95 = 120,993.75 : x - Step 2: Convert to fraction form
221,595.75/305,802.95 = 120,993.75/x - Step 3: Cross multiply
221,595.75x = 305,802.95 × 120,993.75 - Step 4: Simplify right side
221,595.75x = 37,000,245,076.59 - Step 5: Solve for x
x = 37,000,245,076.59/221,595.75 - Step 6: Final answer
x = 166,971.82
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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.