Finding the Fourth Proportional to 221,386.42, 305,558.70 and 140,798.44
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Solution
The fourth proportional to 221,386.42, 305,558.70 and 140,798.44 is: 194,330.75
Step by Step Solution
- Step 1: Write the proportion equation
221,386.42 : 305,558.70 = 140,798.44 : x - Step 2: Convert to fraction form
221,386.42/305,558.70 = 140,798.44/x - Step 3: Cross multiply
221,386.42x = 305,558.70 × 140,798.44 - Step 4: Simplify right side
221,386.42x = 43,022,188,288.43 - Step 5: Solve for x
x = 43,022,188,288.43/221,386.42 - Step 6: Final answer
x = 194,330.75
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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.