Finding the Fourth Proportional to 268,231.70, 402,347.55 and 143,815.70
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Solution
The fourth proportional to 268,231.70, 402,347.55 and 143,815.70 is: 215,723.55
Step by Step Solution
- Step 1: Write the proportion equation
268,231.70 : 402,347.55 = 143,815.70 : x - Step 2: Convert to fraction form
268,231.70/402,347.55 = 143,815.70/x - Step 3: Cross multiply
268,231.70x = 402,347.55 × 143,815.70 - Step 4: Simplify right side
268,231.70x = 57,863,894,546.54 - Step 5: Solve for x
x = 57,863,894,546.54/268,231.70 - Step 6: Final answer
x = 215,723.55
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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.