Finding the Fourth Proportional to 355,007,113.49, 489,900,418.97 and 198,375,507.56
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Solution
The fourth proportional to 355,007,113.49, 489,900,418.97 and 198,375,507.56 is: 273,752,949.09
Step by Step Solution
- Step 1: Write the proportion equation
355,007,113.49 : 489,900,418.97 = 198,375,507.56 : x - Step 2: Convert to fraction form
355,007,113.49/489,900,418.97 = 198,375,507.56/x - Step 3: Cross multiply
355,007,113.49x = 489,900,418.97 × 198,375,507.56 - Step 4: Simplify right side
355,007,113.49x = 97,184,244,266,038,528 - Step 5: Solve for x
x = 97,184,244,266,038,528/355,007,113.49 - Step 6: Final answer
x = 273,752,949.09
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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.