Finding the Fourth Proportional to 351,452.19, 485,039.82 and 253,416.07
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Solution
The fourth proportional to 351,452.19, 485,039.82 and 253,416.07 is: 349,739.99
Step by Step Solution
- Step 1: Write the proportion equation
351,452.19 : 485,039.82 = 253,416.07 : x - Step 2: Convert to fraction form
351,452.19/485,039.82 = 253,416.07/x - Step 3: Cross multiply
351,452.19x = 485,039.82 × 253,416.07 - Step 4: Simplify right side
351,452.19x = 122,916,884,977.91 - Step 5: Solve for x
x = 122,916,884,977.91/351,452.19 - Step 6: Final answer
x = 349,739.99
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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.