Finding the Fourth Proportional to 257,519,979.60, 386,279,969.40 and 247,475,744.70
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Solution
The fourth proportional to 257,519,979.60, 386,279,969.40 and 247,475,744.70 is: 371,213,617.05
Step by Step Solution
- Step 1: Write the proportion equation
257,519,979.60 : 386,279,969.40 = 247,475,744.70 : x - Step 2: Convert to fraction form
257,519,979.60/386,279,969.40 = 247,475,744.70/x - Step 3: Cross multiply
257,519,979.60x = 386,279,969.40 × 247,475,744.70 - Step 4: Simplify right side
257,519,979.60x = 95,594,923,089,958,208 - Step 5: Solve for x
x = 95,594,923,089,958,208/257,519,979.60 - Step 6: Final answer
x = 371,213,617.05
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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.