Finding the Fourth Proportional to 362,139.80, 543,209.70 and 212,451.80
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Solution
The fourth proportional to 362,139.80, 543,209.70 and 212,451.80 is: 318,677.70
Step by Step Solution
- Step 1: Write the proportion equation
362,139.80 : 543,209.70 = 212,451.80 : x - Step 2: Convert to fraction form
362,139.80/543,209.70 = 212,451.80/x - Step 3: Cross multiply
362,139.80x = 543,209.70 × 212,451.80 - Step 4: Simplify right side
362,139.80x = 115,405,878,542.46 - Step 5: Solve for x
x = 115,405,878,542.46/362,139.80 - Step 6: Final answer
x = 318,677.70
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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.