Finding the Fourth Proportional to 220,338,197.40, 330,519,737.70 and 66,989,256.60
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Solution
The fourth proportional to 220,338,197.40, 330,519,737.70 and 66,989,256.60 is: 100,487,667.51
Step by Step Solution
- Step 1: Write the proportion equation
220,338,197.40 : 330,519,737.70 = 66,989,256.60 : x - Step 2: Convert to fraction form
220,338,197.40/330,519,737.70 = 66,989,256.60/x - Step 3: Cross multiply
220,338,197.40x = 330,519,737.70 × 66,989,256.60 - Step 4: Simplify right side
220,338,197.40x = 22,141,271,520,149,992 - Step 5: Solve for x
x = 22,141,271,520,149,992/220,338,197.40 - Step 6: Final answer
x = 100,487,667.51
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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.