Finding the Fourth Proportional to 218,779.05, 328,092.68 and 76,621.19
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Solution
The fourth proportional to 218,779.05, 328,092.68 and 76,621.19 is: 114,905.20
Step by Step Solution
- Step 1: Write the proportion equation
218,779.05 : 328,092.68 = 76,621.19 : x - Step 2: Convert to fraction form
218,779.05/328,092.68 = 76,621.19/x - Step 3: Cross multiply
218,779.05x = 328,092.68 × 76,621.19 - Step 4: Simplify right side
218,779.05x = 25,138,851,537.51 - Step 5: Solve for x
x = 25,138,851,537.51/218,779.05 - Step 6: Final answer
x = 114,905.20
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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.