Finding the Fourth Proportional to 198,605.40, 297,908.10 and 135,619.80
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Solution
The fourth proportional to 198,605.40, 297,908.10 and 135,619.80 is: 203,429.70
Step by Step Solution
- Step 1: Write the proportion equation
198,605.40 : 297,908.10 = 135,619.80 : x - Step 2: Convert to fraction form
198,605.40/297,908.10 = 135,619.80/x - Step 3: Cross multiply
198,605.40x = 297,908.10 × 135,619.80 - Step 4: Simplify right side
198,605.40x = 40,402,236,940.38 - Step 5: Solve for x
x = 40,402,236,940.38/198,605.40 - Step 6: Final answer
x = 203,429.70
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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.