Finding the Fourth Proportional to 453,087.38, 679,182.09 and 212,771.09
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Solution
The fourth proportional to 453,087.38, 679,182.09 and 212,771.09 is: 318,945.79
Step by Step Solution
- Step 1: Write the proportion equation
453,087.38 : 679,182.09 = 212,771.09 : x - Step 2: Convert to fraction form
453,087.38/679,182.09 = 212,771.09/x - Step 3: Cross multiply
453,087.38x = 679,182.09 × 212,771.09 - Step 4: Simplify right side
453,087.38x = 144,510,313,597.78 - Step 5: Solve for x
x = 144,510,313,597.78/453,087.38 - Step 6: Final answer
x = 318,945.79
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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.