Finding the Fourth Proportional to 342,120,912.47, 472,136,816.88 and 193,438,839.72
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Solution
The fourth proportional to 342,120,912.47, 472,136,816.88 and 193,438,839.72 is: 266,951,228.99
Step by Step Solution
- Step 1: Write the proportion equation
342,120,912.47 : 472,136,816.88 = 193,438,839.72 : x - Step 2: Convert to fraction form
342,120,912.47/472,136,816.88 = 193,438,839.72/x - Step 3: Cross multiply
342,120,912.47x = 472,136,816.88 × 193,438,839.72 - Step 4: Simplify right side
342,120,912.47x = 91,329,598,046,361,312 - Step 5: Solve for x
x = 91,329,598,046,361,312/342,120,912.47 - Step 6: Final answer
x = 266,951,228.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.