Finding the Fourth Proportional to 261,403.60, 392,105.40 and 202,281.70
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Solution
The fourth proportional to 261,403.60, 392,105.40 and 202,281.70 is: 303,422.55
Step by Step Solution
- Step 1: Write the proportion equation
261,403.60 : 392,105.40 = 202,281.70 : x - Step 2: Convert to fraction form
261,403.60/392,105.40 = 202,281.70/x - Step 3: Cross multiply
261,403.60x = 392,105.40 × 202,281.70 - Step 4: Simplify right side
261,403.60x = 79,315,746,891.18 - Step 5: Solve for x
x = 79,315,746,891.18/261,403.60 - Step 6: Final answer
x = 303,422.55
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1.5x scale
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.