Finding the Fourth Proportional to 221,596.44, 305,434.86 and 156,982.74
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Solution
The fourth proportional to 221,596.44, 305,434.86 and 156,982.74 is: 216,375.32
Step by Step Solution
- Step 1: Write the proportion equation
221,596.44 : 305,434.86 = 156,982.74 : x - Step 2: Convert to fraction form
221,596.44/305,434.86 = 156,982.74/x - Step 3: Cross multiply
221,596.44x = 305,434.86 × 156,982.74 - Step 4: Simplify right side
221,596.44x = 47,948,001,214.32 - Step 5: Solve for x
x = 47,948,001,214.32/221,596.44 - Step 6: Final answer
x = 216,375.32
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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.