Finding the Fourth Proportional to 261,497.20, 391,901.14 and 103,639.52
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Solution
The fourth proportional to 261,497.20, 391,901.14 and 103,639.52 is: 155,322.68
Step by Step Solution
- Step 1: Write the proportion equation
261,497.20 : 391,901.14 = 103,639.52 : x - Step 2: Convert to fraction form
261,497.20/391,901.14 = 103,639.52/x - Step 3: Cross multiply
261,497.20x = 391,901.14 × 103,639.52 - Step 4: Simplify right side
261,497.20x = 40,616,446,037.05 - Step 5: Solve for x
x = 40,616,446,037.05/261,497.20 - Step 6: Final answer
x = 155,322.68
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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.