Finding the Fourth Proportional to 204,965.30, 307,491.15 and 86,575.70
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Solution
The fourth proportional to 204,965.30, 307,491.15 and 86,575.70 is: 129,881.80
Step by Step Solution
- Step 1: Write the proportion equation
204,965.30 : 307,491.15 = 86,575.70 : x - Step 2: Convert to fraction form
204,965.30/307,491.15 = 86,575.70/x - Step 3: Cross multiply
204,965.30x = 307,491.15 × 86,575.70 - Step 4: Simplify right side
204,965.30x = 26,621,261,555.06 - Step 5: Solve for x
x = 26,621,261,555.06/204,965.30 - Step 6: Final answer
x = 129,881.80
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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.