Finding the Fourth Proportional to 378,168,947.87, 521,873,149.07 and 204,328,691.87
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Solution
The fourth proportional to 378,168,947.87, 521,873,149.07 and 204,328,691.87 is: 281,973,595.32
Step by Step Solution
- Step 1: Write the proportion equation
378,168,947.87 : 521,873,149.07 = 204,328,691.87 : x - Step 2: Convert to fraction form
378,168,947.87/521,873,149.07 = 204,328,691.87/x - Step 3: Cross multiply
378,168,947.87x = 521,873,149.07 × 204,328,691.87 - Step 4: Simplify right side
378,168,947.87x = 106,633,657,870,528,960 - Step 5: Solve for x
x = 106,633,657,870,528,960/378,168,947.87 - Step 6: Final answer
x = 281,973,595.32
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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.