Finding the Fourth Proportional to 313,878.60, 470,126.70 and 278,857.80
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Solution
The fourth proportional to 313,878.60, 470,126.70 and 278,857.80 is: 417,672.62
Step by Step Solution
- Step 1: Write the proportion equation
313,878.60 : 470,126.70 = 278,857.80 : x - Step 2: Convert to fraction form
313,878.60/470,126.70 = 278,857.80/x - Step 3: Cross multiply
313,878.60x = 470,126.70 × 278,857.80 - Step 4: Simplify right side
313,878.60x = 131,098,497,283.26 - Step 5: Solve for x
x = 131,098,497,283.26/313,878.60 - Step 6: Final answer
x = 417,672.62
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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.