Finding the Fourth Proportional to 262,291.80, 393,437.70 and 257,917.80
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Solution
The fourth proportional to 262,291.80, 393,437.70 and 257,917.80 is: 386,876.70
Step by Step Solution
- Step 1: Write the proportion equation
262,291.80 : 393,437.70 = 257,917.80 : x - Step 2: Convert to fraction form
262,291.80/393,437.70 = 257,917.80/x - Step 3: Cross multiply
262,291.80x = 393,437.70 × 257,917.80 - Step 4: Simplify right side
262,291.80x = 101,474,586,021.06 - Step 5: Solve for x
x = 101,474,586,021.06/262,291.80 - Step 6: Final answer
x = 386,876.70
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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.