Finding the Fourth Proportional to 362,103.80, 543,155.70 and 212,415.80
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Solution
The fourth proportional to 362,103.80, 543,155.70 and 212,415.80 is: 318,623.70
Step by Step Solution
- Step 1: Write the proportion equation
362,103.80 : 543,155.70 = 212,415.80 : x - Step 2: Convert to fraction form
362,103.80/543,155.70 = 212,415.80/x - Step 3: Cross multiply
362,103.80x = 543,155.70 × 212,415.80 - Step 4: Simplify right side
362,103.80x = 115,374,852,540.06 - Step 5: Solve for x
x = 115,374,852,540.06/362,103.80 - Step 6: Final answer
x = 318,623.70
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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.