Finding the Fourth Proportional to 421,477.20, 581,462.12 and 276,317.84
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Solution
The fourth proportional to 421,477.20, 581,462.12 and 276,317.84 is: 381,202.95
Step by Step Solution
- Step 1: Write the proportion equation
421,477.20 : 581,462.12 = 276,317.84 : x - Step 2: Convert to fraction form
421,477.20/581,462.12 = 276,317.84/x - Step 3: Cross multiply
421,477.20x = 581,462.12 × 276,317.84 - Step 4: Simplify right side
421,477.20x = 160,668,352,751.32 - Step 5: Solve for x
x = 160,668,352,751.32/421,477.20 - Step 6: Final answer
x = 381,202.95
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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.