Finding the Fourth Proportional to 320,879.28, 479,368.77 and 207,636.96
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Solution
The fourth proportional to 320,879.28, 479,368.77 and 207,636.96 is: 310,193.52
Step by Step Solution
- Step 1: Write the proportion equation
320,879.28 : 479,368.77 = 207,636.96 : x - Step 2: Convert to fraction form
320,879.28/479,368.77 = 207,636.96/x - Step 3: Cross multiply
320,879.28x = 479,368.77 × 207,636.96 - Step 4: Simplify right side
320,879.28x = 99,534,674,121.74 - Step 5: Solve for x
x = 99,534,674,121.74/320,879.28 - Step 6: Final answer
x = 310,193.52
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.