Finding the Fourth Proportional to 305,363.99, 421,404.86 and 169,406.80
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Solution
The fourth proportional to 305,363.99, 421,404.86 and 169,406.80 is: 233,782.80
Step by Step Solution
- Step 1: Write the proportion equation
305,363.99 : 421,404.86 = 169,406.80 : x - Step 2: Convert to fraction form
305,363.99/421,404.86 = 169,406.80/x - Step 3: Cross multiply
305,363.99x = 421,404.86 × 169,406.80 - Step 4: Simplify right side
305,363.99x = 71,388,848,837.05 - Step 5: Solve for x
x = 71,388,848,837.05/305,363.99 - Step 6: Final answer
x = 233,782.80
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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.