Finding the Fourth Proportional to 392,111.40, 585,511.08 and 311,242.08
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Solution
The fourth proportional to 392,111.40, 585,511.08 and 311,242.08 is: 464,754.88
Step by Step Solution
- Step 1: Write the proportion equation
392,111.40 : 585,511.08 = 311,242.08 : x - Step 2: Convert to fraction form
392,111.40/585,511.08 = 311,242.08/x - Step 3: Cross multiply
392,111.40x = 585,511.08 × 311,242.08 - Step 4: Simplify right side
392,111.40x = 182,235,686,402.25 - Step 5: Solve for x
x = 182,235,686,402.25/392,111.40 - Step 6: Final answer
x = 464,754.88
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.