Finding the Fourth Proportional to 445,465.70, 668,351.55 and 129,968.90
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Solution
The fourth proportional to 445,465.70, 668,351.55 and 129,968.90 is: 194,997.99
Step by Step Solution
- Step 1: Write the proportion equation
445,465.70 : 668,351.55 = 129,968.90 : x - Step 2: Convert to fraction form
445,465.70/668,351.55 = 129,968.90/x - Step 3: Cross multiply
445,465.70x = 668,351.55 × 129,968.90 - Step 4: Simplify right side
445,465.70x = 86,864,915,766.80 - Step 5: Solve for x
x = 86,864,915,766.80/445,465.70 - Step 6: Final answer
x = 194,997.99
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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.