Finding the Fourth Proportional to 421,394.10, 581,681.99 and 276,209.23
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Solution
The fourth proportional to 421,394.10, 581,681.99 and 276,209.23 is: 381,272.39
Step by Step Solution
- Step 1: Write the proportion equation
421,394.10 : 581,681.99 = 276,209.23 : x - Step 2: Convert to fraction form
421,394.10/581,681.99 = 276,209.23/x - Step 3: Cross multiply
421,394.10x = 581,681.99 × 276,209.23 - Step 4: Simplify right side
421,394.10x = 160,665,933,181.72 - Step 5: Solve for x
x = 160,665,933,181.72/421,394.10 - Step 6: Final answer
x = 381,272.39
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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.