Finding the Fourth Proportional to 311,360.12, 429,527.82 and 299,289.08
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Solution
The fourth proportional to 311,360.12, 429,527.82 and 299,289.08 is: 412,875.57
Step by Step Solution
- Step 1: Write the proportion equation
311,360.12 : 429,527.82 = 299,289.08 : x - Step 2: Convert to fraction form
311,360.12/429,527.82 = 299,289.08/x - Step 3: Cross multiply
311,360.12x = 429,527.82 × 299,289.08 - Step 4: Simplify right side
311,360.12x = 128,552,986,082.21 - Step 5: Solve for x
x = 128,552,986,082.21/311,360.12 - Step 6: Final answer
x = 412,875.57
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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.