Finding the Fourth Proportional to 381,881.13, 527,012.64 and 212,115.26
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Solution
The fourth proportional to 381,881.13, 527,012.64 and 212,115.26 is: 292,728.32
Step by Step Solution
- Step 1: Write the proportion equation
381,881.13 : 527,012.64 = 212,115.26 : x - Step 2: Convert to fraction form
381,881.13/527,012.64 = 212,115.26/x - Step 3: Cross multiply
381,881.13x = 527,012.64 × 212,115.26 - Step 4: Simplify right side
381,881.13x = 111,787,420,521.82 - Step 5: Solve for x
x = 111,787,420,521.82/381,881.13 - Step 6: Final answer
x = 292,728.32
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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.