Finding the Fourth Proportional to 378,395.60, 522,162.12 and 208,631.12
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Solution
The fourth proportional to 378,395.60, 522,162.12 and 208,631.12 is: 287,897.82
Step by Step Solution
- Step 1: Write the proportion equation
378,395.60 : 522,162.12 = 208,631.12 : x - Step 2: Convert to fraction form
378,395.60/522,162.12 = 208,631.12/x - Step 3: Cross multiply
378,395.60x = 522,162.12 × 208,631.12 - Step 4: Simplify right side
378,395.60x = 108,939,267,917.17 - Step 5: Solve for x
x = 108,939,267,917.17/378,395.60 - Step 6: Final answer
x = 287,897.82
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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.