Finding the Fourth Proportional to 206,603.70, 309,905.55 and 197,855.70
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Solution
The fourth proportional to 206,603.70, 309,905.55 and 197,855.70 is: 296,783.55
Step by Step Solution
- Step 1: Write the proportion equation
206,603.70 : 309,905.55 = 197,855.70 : x - Step 2: Convert to fraction form
206,603.70/309,905.55 = 197,855.70/x - Step 3: Cross multiply
206,603.70x = 309,905.55 × 197,855.70 - Step 4: Simplify right side
206,603.70x = 61,316,579,529.14 - Step 5: Solve for x
x = 61,316,579,529.14/206,603.70 - Step 6: Final answer
x = 296,783.55
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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.