Finding the Fourth Proportional to 215,937.60, 323,930.70 and 66,176.70
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Solution
The fourth proportional to 215,937.60, 323,930.70 and 66,176.70 is: 99,272.50
Step by Step Solution
- Step 1: Write the proportion equation
215,937.60 : 323,930.70 = 66,176.70 : x - Step 2: Convert to fraction form
215,937.60/323,930.70 = 66,176.70/x - Step 3: Cross multiply
215,937.60x = 323,930.70 × 66,176.70 - Step 4: Simplify right side
215,937.60x = 21,436,664,754.69 - Step 5: Solve for x
x = 21,436,664,754.69/215,937.60 - Step 6: Final answer
x = 99,272.50
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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.