Finding the Fourth Proportional to 208,613.12, 312,597.58 and 140,879.70
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Solution
The fourth proportional to 208,613.12, 312,597.58 and 140,879.70 is: 211,102.03
Step by Step Solution
- Step 1: Write the proportion equation
208,613.12 : 312,597.58 = 140,879.70 : x - Step 2: Convert to fraction form
208,613.12/312,597.58 = 140,879.70/x - Step 3: Cross multiply
208,613.12x = 312,597.58 × 140,879.70 - Step 4: Simplify right side
208,613.12x = 44,038,653,291.13 - Step 5: Solve for x
x = 44,038,653,291.13/208,613.12 - Step 6: Final answer
x = 211,102.03
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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.