Finding the Fourth Proportional to 664,479.60, 996,865.20 and 215,221.20
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Solution
The fourth proportional to 664,479.60, 996,865.20 and 215,221.20 is: 322,879.02
Step by Step Solution
- Step 1: Write the proportion equation
664,479.60 : 996,865.20 = 215,221.20 : x - Step 2: Convert to fraction form
664,479.60/996,865.20 = 215,221.20/x - Step 3: Cross multiply
664,479.60x = 996,865.20 × 215,221.20 - Step 4: Simplify right side
664,479.60x = 214,546,524,582.24 - Step 5: Solve for x
x = 214,546,524,582.24/664,479.60 - Step 6: Final answer
x = 322,879.02
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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.