Finding the Fourth Proportional to 221,538.41, 305,709.54 and 130,872.68
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Solution
The fourth proportional to 221,538.41, 305,709.54 and 130,872.68 is: 180,596.34
Step by Step Solution
- Step 1: Write the proportion equation
221,538.41 : 305,709.54 = 130,872.68 : x - Step 2: Convert to fraction form
221,538.41/305,709.54 = 130,872.68/x - Step 3: Cross multiply
221,538.41x = 305,709.54 × 130,872.68 - Step 4: Simplify right side
221,538.41x = 40,009,026,664.62 - Step 5: Solve for x
x = 40,009,026,664.62/221,538.41 - Step 6: Final answer
x = 180,596.34
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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.