Finding the Fourth Proportional to 221,395.68, 305,169.12 and 149,749.56
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Solution
The fourth proportional to 221,395.68, 305,169.12 and 149,749.56 is: 206,412.98
Step by Step Solution
- Step 1: Write the proportion equation
221,395.68 : 305,169.12 = 149,749.56 : x - Step 2: Convert to fraction form
221,395.68/305,169.12 = 149,749.56/x - Step 3: Cross multiply
221,395.68x = 305,169.12 × 149,749.56 - Step 4: Simplify right side
221,395.68x = 45,698,941,445.59 - Step 5: Solve for x
x = 45,698,941,445.59/221,395.68 - Step 6: Final answer
x = 206,412.98
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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.