Finding the Fourth Proportional to 311,900.91, 430,405.32 and 175,926.75
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Solution
The fourth proportional to 311,900.91, 430,405.32 and 175,926.75 is: 242,768.80
Step by Step Solution
- Step 1: Write the proportion equation
311,900.91 : 430,405.32 = 175,926.75 : x - Step 2: Convert to fraction form
311,900.91/430,405.32 = 175,926.75/x - Step 3: Cross multiply
311,900.91x = 430,405.32 × 175,926.75 - Step 4: Simplify right side
311,900.91x = 75,719,809,130.31 - Step 5: Solve for x
x = 75,719,809,130.31/311,900.91 - Step 6: Final answer
x = 242,768.80
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1.5x scale
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.