Finding the Fourth Proportional to 311,390.12, 429,719.68 and 175,425.70
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Solution
The fourth proportional to 311,390.12, 429,719.68 and 175,425.70 is: 242,088.20
Step by Step Solution
- Step 1: Write the proportion equation
311,390.12 : 429,719.68 = 175,425.70 : x - Step 2: Convert to fraction form
311,390.12/429,719.68 = 175,425.70/x - Step 3: Cross multiply
311,390.12x = 429,719.68 × 175,425.70 - Step 4: Simplify right side
311,390.12x = 75,383,875,618.48 - Step 5: Solve for x
x = 75,383,875,618.48/311,390.12 - Step 6: Final answer
x = 242,088.20
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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.