Finding the Fourth Proportional to 280,675.98, 421,042.05 and 81,001.26
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Solution
The fourth proportional to 280,675.98, 421,042.05 and 81,001.26 is: 121,509.99
Step by Step Solution
- Step 1: Write the proportion equation
280,675.98 : 421,042.05 = 81,001.26 : x - Step 2: Convert to fraction form
280,675.98/421,042.05 = 81,001.26/x - Step 3: Cross multiply
280,675.98x = 421,042.05 × 81,001.26 - Step 4: Simplify right side
280,675.98x = 34,104,936,562.98 - Step 5: Solve for x
x = 34,104,936,562.98/280,675.98 - Step 6: Final answer
x = 121,509.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.