Finding the Fourth Proportional to 398,779.68, 550,004.84 and 255,553.08
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Solution
The fourth proportional to 398,779.68, 550,004.84 and 255,553.08 is: 352,463.87
Step by Step Solution
- Step 1: Write the proportion equation
398,779.68 : 550,004.84 = 255,553.08 : x - Step 2: Convert to fraction form
398,779.68/550,004.84 = 255,553.08/x - Step 3: Cross multiply
398,779.68x = 550,004.84 × 255,553.08 - Step 4: Simplify right side
398,779.68x = 140,555,430,876.91 - Step 5: Solve for x
x = 140,555,430,876.91/398,779.68 - Step 6: Final answer
x = 352,463.87
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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.