Finding the Fourth Proportional to 221,422.74, 305,487.21 and 134,235.96
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Solution
The fourth proportional to 221,422.74, 305,487.21 and 134,235.96 is: 185,199.45
Step by Step Solution
- Step 1: Write the proportion equation
221,422.74 : 305,487.21 = 134,235.96 : x - Step 2: Convert to fraction form
221,422.74/305,487.21 = 134,235.96/x - Step 3: Cross multiply
221,422.74x = 305,487.21 × 134,235.96 - Step 4: Simplify right side
221,422.74x = 41,007,368,902.07 - Step 5: Solve for x
x = 41,007,368,902.07/221,422.74 - Step 6: Final answer
x = 185,199.45
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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.