Finding the Fourth Proportional to 279,324.60, 385,660.80 and 261,478.68
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Solution
The fourth proportional to 279,324.60, 385,660.80 and 261,478.68 is: 361,021.11
Step by Step Solution
- Step 1: Write the proportion equation
279,324.60 : 385,660.80 = 261,478.68 : x - Step 2: Convert to fraction form
279,324.60/385,660.80 = 261,478.68/x - Step 3: Cross multiply
279,324.60x = 385,660.80 × 261,478.68 - Step 4: Simplify right side
279,324.60x = 100,842,076,911.74 - Step 5: Solve for x
x = 100,842,076,911.74/279,324.60 - Step 6: Final answer
x = 361,021.11
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1.5x scale
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.