Finding the Fourth Proportional to 260,761.60, 391,142.40 and 201,639.70
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Solution
The fourth proportional to 260,761.60, 391,142.40 and 201,639.70 is: 302,459.55
Step by Step Solution
- Step 1: Write the proportion equation
260,761.60 : 391,142.40 = 201,639.70 : x - Step 2: Convert to fraction form
260,761.60/391,142.40 = 201,639.70/x - Step 3: Cross multiply
260,761.60x = 391,142.40 × 201,639.70 - Step 4: Simplify right side
260,761.60x = 78,869,836,193.28 - Step 5: Solve for x
x = 78,869,836,193.28/260,761.60 - Step 6: Final answer
x = 302,459.55
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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.