Finding the Fourth Proportional to 258,221.80, 387,332.97 and 80,729.74
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Solution
The fourth proportional to 258,221.80, 387,332.97 and 80,729.74 is: 121,094.69
Step by Step Solution
- Step 1: Write the proportion equation
258,221.80 : 387,332.97 = 80,729.74 : x - Step 2: Convert to fraction form
258,221.80/387,332.97 = 80,729.74/x - Step 3: Cross multiply
258,221.80x = 387,332.97 × 80,729.74 - Step 4: Simplify right side
258,221.80x = 31,269,289,961.53 - Step 5: Solve for x
x = 31,269,289,961.53/258,221.80 - Step 6: Final answer
x = 121,094.69
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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.