Finding the Fourth Proportional to 211,765.82, 317,710.92 and 85,340.99
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Solution
The fourth proportional to 211,765.82, 317,710.92 and 85,340.99 is: 128,036.54
Step by Step Solution
- Step 1: Write the proportion equation
211,765.82 : 317,710.92 = 85,340.99 : x - Step 2: Convert to fraction form
211,765.82/317,710.92 = 85,340.99/x - Step 3: Cross multiply
211,765.82x = 317,710.92 × 85,340.99 - Step 4: Simplify right side
211,765.82x = 27,113,762,858.06 - Step 5: Solve for x
x = 27,113,762,858.06/211,765.82 - Step 6: Final answer
x = 128,036.54
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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.