Finding the Fourth Proportional to 378,168,986.42, 521,873,202.26 and 204,328,730.42
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Solution
The fourth proportional to 378,168,986.42, 521,873,202.26 and 204,328,730.42 is: 281,973,648.52
Step by Step Solution
- Step 1: Write the proportion equation
378,168,986.42 : 521,873,202.26 = 204,328,730.42 : x - Step 2: Convert to fraction form
378,168,986.42/521,873,202.26 = 204,328,730.42/x - Step 3: Cross multiply
378,168,986.42x = 521,873,202.26 × 204,328,730.42 - Step 4: Simplify right side
378,168,986.42x = 106,633,688,856,700,992 - Step 5: Solve for x
x = 106,633,688,856,700,992/378,168,986.42 - Step 6: Final answer
x = 281,973,648.52
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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.