Finding the Fourth Proportional to 422,639.40, 583,302.15 and 261,546.38
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Solution
The fourth proportional to 422,639.40, 583,302.15 and 261,546.38 is: 360,970.99
Step by Step Solution
- Step 1: Write the proportion equation
422,639.40 : 583,302.15 = 261,546.38 : x - Step 2: Convert to fraction form
422,639.40/583,302.15 = 261,546.38/x - Step 3: Cross multiply
422,639.40x = 583,302.15 × 261,546.38 - Step 4: Simplify right side
422,639.40x = 152,560,562,862.21 - Step 5: Solve for x
x = 152,560,562,862.21/422,639.40 - Step 6: Final answer
x = 360,970.99
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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.