Finding the Fourth Proportional to 310,639.91, 428,827.50 and 234,190.08
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Solution
The fourth proportional to 310,639.91, 428,827.50 and 234,190.08 is: 323,291.20
Step by Step Solution
- Step 1: Write the proportion equation
310,639.91 : 428,827.50 = 234,190.08 : x - Step 2: Convert to fraction form
310,639.91/428,827.50 = 234,190.08/x - Step 3: Cross multiply
310,639.91x = 428,827.50 × 234,190.08 - Step 4: Simplify right side
310,639.91x = 100,427,146,531.20 - Step 5: Solve for x
x = 100,427,146,531.20/310,639.91 - Step 6: Final answer
x = 323,291.20
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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.