Finding the Fourth Proportional to 292,403.20, 438,021.60 and 203,756.80
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Solution
The fourth proportional to 292,403.20, 438,021.60 and 203,756.80 is: 305,228.81
Step by Step Solution
- Step 1: Write the proportion equation
292,403.20 : 438,021.60 = 203,756.80 : x - Step 2: Convert to fraction form
292,403.20/438,021.60 = 203,756.80/x - Step 3: Cross multiply
292,403.20x = 438,021.60 × 203,756.80 - Step 4: Simplify right side
292,403.20x = 89,249,879,546.88 - Step 5: Solve for x
x = 89,249,879,546.88/292,403.20 - Step 6: Final answer
x = 305,228.81
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.