Finding the Fourth Proportional to 261,943.80, 392,915.70 and 209,455.80
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Solution
The fourth proportional to 261,943.80, 392,915.70 and 209,455.80 is: 314,183.70
Step by Step Solution
- Step 1: Write the proportion equation
261,943.80 : 392,915.70 = 209,455.80 : x - Step 2: Convert to fraction form
261,943.80/392,915.70 = 209,455.80/x - Step 3: Cross multiply
261,943.80x = 392,915.70 × 209,455.80 - Step 4: Simplify right side
261,943.80x = 82,298,472,276.06 - Step 5: Solve for x
x = 82,298,472,276.06/261,943.80 - Step 6: Final answer
x = 314,183.70
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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.