Finding the Fourth Proportional to 355,007,113.37, 489,900,418.79 and 198,375,507.44
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Solution
The fourth proportional to 355,007,113.37, 489,900,418.79 and 198,375,507.44 is: 273,752,948.92
Step by Step Solution
- Step 1: Write the proportion equation
355,007,113.37 : 489,900,418.79 = 198,375,507.44 : x - Step 2: Convert to fraction form
355,007,113.37/489,900,418.79 = 198,375,507.44/x - Step 3: Cross multiply
355,007,113.37x = 489,900,418.79 × 198,375,507.44 - Step 4: Simplify right side
355,007,113.37x = 97,184,244,170,581,200 - Step 5: Solve for x
x = 97,184,244,170,581,200/355,007,113.37 - Step 6: Final answer
x = 273,752,948.92
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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.