Finding the Fourth Proportional to 421,405.86, 581,578.08 and 240,176.19
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Solution
The fourth proportional to 421,405.86, 581,578.08 and 240,176.19 is: 331,464.80
Step by Step Solution
- Step 1: Write the proportion equation
421,405.86 : 581,578.08 = 240,176.19 : x - Step 2: Convert to fraction form
421,405.86/581,578.08 = 240,176.19/x - Step 3: Cross multiply
421,405.86x = 581,578.08 × 240,176.19 - Step 4: Simplify right side
421,405.86x = 139,681,207,441.92 - Step 5: Solve for x
x = 139,681,207,441.92/421,405.86 - Step 6: Final answer
x = 331,464.80
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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.