Finding the Fourth Proportional to 331,497.20, 497,440.20 and 121,156.40
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Solution
The fourth proportional to 331,497.20, 497,440.20 and 121,156.40 is: 181,805.65
Step by Step Solution
- Step 1: Write the proportion equation
331,497.20 : 497,440.20 = 121,156.40 : x - Step 2: Convert to fraction form
331,497.20/497,440.20 = 121,156.40/x - Step 3: Cross multiply
331,497.20x = 497,440.20 × 121,156.40 - Step 4: Simplify right side
331,497.20x = 60,268,063,847.28 - Step 5: Solve for x
x = 60,268,063,847.28/331,497.20 - Step 6: Final answer
x = 181,805.65
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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.