Finding the Fourth Proportional to 257,137,903.38, 354,852,884.70 and 139,665,531.18
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Solution
The fourth proportional to 257,137,903.38, 354,852,884.70 and 139,665,531.18 is: 192,739,833.30
Step by Step Solution
- Step 1: Write the proportion equation
257,137,903.38 : 354,852,884.70 = 139,665,531.18 : x - Step 2: Convert to fraction form
257,137,903.38/354,852,884.70 = 139,665,531.18/x - Step 3: Cross multiply
257,137,903.38x = 354,852,884.70 × 139,665,531.18 - Step 4: Simplify right side
257,137,903.38x = 49,560,716,632,380,792 - Step 5: Solve for x
x = 49,560,716,632,380,792/257,137,903.38 - Step 6: Final answer
x = 192,739,833.30
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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.