Finding the Fourth Proportional to 211,128.76, 316,739.22 and 70,883.68
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Solution
The fourth proportional to 211,128.76, 316,739.22 and 70,883.68 is: 106,340.99
Step by Step Solution
- Step 1: Write the proportion equation
211,128.76 : 316,739.22 = 70,883.68 : x - Step 2: Convert to fraction form
211,128.76/316,739.22 = 70,883.68/x - Step 3: Cross multiply
211,128.76x = 316,739.22 × 70,883.68 - Step 4: Simplify right side
211,128.76x = 22,451,641,513.93 - Step 5: Solve for x
x = 22,451,641,513.93/211,128.76 - Step 6: Final answer
x = 106,340.99
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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.