Finding the Fourth Proportional to 453,855.20, 680,782.80 and 121,431.20
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Solution
The fourth proportional to 453,855.20, 680,782.80 and 121,431.20 is: 182,146.80
Step by Step Solution
- Step 1: Write the proportion equation
453,855.20 : 680,782.80 = 121,431.20 : x - Step 2: Convert to fraction form
453,855.20/680,782.80 = 121,431.20/x - Step 3: Cross multiply
453,855.20x = 680,782.80 × 121,431.20 - Step 4: Simplify right side
453,855.20x = 82,668,272,343.36 - Step 5: Solve for x
x = 82,668,272,343.36/453,855.20 - Step 6: Final answer
x = 182,146.80
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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.