Finding the Fourth Proportional to 331,699.40, 497,678.70 and 121,353.80
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Solution
The fourth proportional to 331,699.40, 497,678.70 and 121,353.80 is: 182,078.11
Step by Step Solution
- Step 1: Write the proportion equation
331,699.40 : 497,678.70 = 121,353.80 : x - Step 2: Convert to fraction form
331,699.40/497,678.70 = 121,353.80/x - Step 3: Cross multiply
331,699.40x = 497,678.70 × 121,353.80 - Step 4: Simplify right side
331,699.40x = 60,395,201,424.06 - Step 5: Solve for x
x = 60,395,201,424.06/331,699.40 - Step 6: Final answer
x = 182,078.11
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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.