Finding the Fourth Proportional to 378,699.66, 567,508.14 and 278,070.30
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Solution
The fourth proportional to 378,699.66, 567,508.14 and 278,070.30 is: 416,707.95
Step by Step Solution
- Step 1: Write the proportion equation
378,699.66 : 567,508.14 = 278,070.30 : x - Step 2: Convert to fraction form
378,699.66/567,508.14 = 278,070.30/x - Step 3: Cross multiply
378,699.66x = 567,508.14 × 278,070.30 - Step 4: Simplify right side
378,699.66x = 157,807,158,742.24 - Step 5: Solve for x
x = 157,807,158,742.24/378,699.66 - Step 6: Final answer
x = 416,707.95
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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.