Finding the Fourth Proportional to 311,366.40, 466,984.80 and 86,668.80
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Solution
The fourth proportional to 311,366.40, 466,984.80 and 86,668.80 is: 129,985.16
Step by Step Solution
- Step 1: Write the proportion equation
311,366.40 : 466,984.80 = 86,668.80 : x - Step 2: Convert to fraction form
311,366.40/466,984.80 = 86,668.80/x - Step 3: Cross multiply
311,366.40x = 466,984.80 × 86,668.80 - Step 4: Simplify right side
311,366.40x = 40,473,012,234.24 - Step 5: Solve for x
x = 40,473,012,234.24/311,366.40 - Step 6: Final answer
x = 129,985.16
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1.5x scale
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.