Finding the Fourth Proportional to 245,876.70, 339,327.99 and 138,458.46
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Solution
The fourth proportional to 245,876.70, 339,327.99 and 138,458.46 is: 191,082.89
Step by Step Solution
- Step 1: Write the proportion equation
245,876.70 : 339,327.99 = 138,458.46 : x - Step 2: Convert to fraction form
245,876.70/339,327.99 = 138,458.46/x - Step 3: Cross multiply
245,876.70x = 339,327.99 × 138,458.46 - Step 4: Simplify right side
245,876.70x = 46,982,830,930.30 - Step 5: Solve for x
x = 46,982,830,930.30/245,876.70 - Step 6: Final answer
x = 191,082.89
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.