Finding the Fourth Proportional to 311,391.12, 429,717.69 and 175,468.80
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Solution
The fourth proportional to 311,391.12, 429,717.69 and 175,468.80 is: 242,145.79
Step by Step Solution
- Step 1: Write the proportion equation
311,391.12 : 429,717.69 = 175,468.80 : x - Step 2: Convert to fraction form
311,391.12/429,717.69 = 175,468.80/x - Step 3: Cross multiply
311,391.12x = 429,717.69 × 175,468.80 - Step 4: Simplify right side
311,391.12x = 75,402,047,403.07 - Step 5: Solve for x
x = 75,402,047,403.07/311,391.12 - Step 6: Final answer
x = 242,145.79
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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.