Finding the Fourth Proportional to 312,328.56, 430,718.40 and 204,991.68
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Solution
The fourth proportional to 312,328.56, 430,718.40 and 204,991.68 is: 282,694.89
Step by Step Solution
- Step 1: Write the proportion equation
312,328.56 : 430,718.40 = 204,991.68 : x - Step 2: Convert to fraction form
312,328.56/430,718.40 = 204,991.68/x - Step 3: Cross multiply
312,328.56x = 430,718.40 × 204,991.68 - Step 4: Simplify right side
312,328.56x = 88,293,688,422.91 - Step 5: Solve for x
x = 88,293,688,422.91/312,328.56 - Step 6: Final answer
x = 282,694.89
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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.