Finding the Fourth Proportional to 263,405.40, 396,029.70 and 257,875.80
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Solution
The fourth proportional to 263,405.40, 396,029.70 and 257,875.80 is: 387,715.95
Step by Step Solution
- Step 1: Write the proportion equation
263,405.40 : 396,029.70 = 257,875.80 : x - Step 2: Convert to fraction form
263,405.40/396,029.70 = 257,875.80/x - Step 3: Cross multiply
263,405.40x = 396,029.70 × 257,875.80 - Step 4: Simplify right side
263,405.40x = 102,126,475,711.26 - Step 5: Solve for x
x = 102,126,475,711.26/263,405.40 - Step 6: Final answer
x = 387,715.95
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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.