Finding the Fourth Proportional to 257,519,274.60, 386,278,911.90 and 247,475,039.70
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Solution
The fourth proportional to 257,519,274.60, 386,278,911.90 and 247,475,039.70 is: 371,212,559.55
Step by Step Solution
- Step 1: Write the proportion equation
257,519,274.60 : 386,278,911.90 = 247,475,039.70 : x - Step 2: Convert to fraction form
257,519,274.60/386,278,911.90 = 247,475,039.70/x - Step 3: Cross multiply
257,519,274.60x = 386,278,911.90 × 247,475,039.70 - Step 4: Simplify right side
257,519,274.60x = 95,594,389,057,725,296 - Step 5: Solve for x
x = 95,594,389,057,725,296/257,519,274.60 - Step 6: Final answer
x = 371,212,559.55
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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.