Finding the Fourth Proportional to 398,449.60, 549,879.92 and 224,074.69
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Solution
The fourth proportional to 398,449.60, 549,879.92 and 224,074.69 is: 309,234.02
Step by Step Solution
- Step 1: Write the proportion equation
398,449.60 : 549,879.92 = 224,074.69 : x - Step 2: Convert to fraction form
398,449.60/549,879.92 = 224,074.69/x - Step 3: Cross multiply
398,449.60x = 549,879.92 × 224,074.69 - Step 4: Simplify right side
398,449.60x = 123,214,172,611.23 - Step 5: Solve for x
x = 123,214,172,611.23/398,449.60 - Step 6: Final answer
x = 309,234.02
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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.