Finding the Fourth Proportional to 208,608,138.80, 312,912,208.20 and 122,387,850.80
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Solution
The fourth proportional to 208,608,138.80, 312,912,208.20 and 122,387,850.80 is: 183,581,776.20
Step by Step Solution
- Step 1: Write the proportion equation
208,608,138.80 : 312,912,208.20 = 122,387,850.80 : x - Step 2: Convert to fraction form
208,608,138.80/312,912,208.20 = 122,387,850.80/x - Step 3: Cross multiply
208,608,138.80x = 312,912,208.20 × 122,387,850.80 - Step 4: Simplify right side
208,608,138.80x = 38,296,652,650,680,136 - Step 5: Solve for x
x = 38,296,652,650,680,136/208,608,138.80 - Step 6: Final answer
x = 183,581,776.20
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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.