Finding the Fourth Proportional to 354,555.21, 489,365.09 and 225,467.53
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Solution
The fourth proportional to 354,555.21, 489,365.09 and 225,467.53 is: 311,195.37
Step by Step Solution
- Step 1: Write the proportion equation
354,555.21 : 489,365.09 = 225,467.53 : x - Step 2: Convert to fraction form
354,555.21/489,365.09 = 225,467.53/x - Step 3: Cross multiply
354,555.21x = 489,365.09 × 225,467.53 - Step 4: Simplify right side
354,555.21x = 110,335,938,110.53 - Step 5: Solve for x
x = 110,335,938,110.53/354,555.21 - Step 6: Final answer
x = 311,195.37
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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.