Finding the Fourth Proportional to 402,440.12, 555,136.12 and 251,274.68
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Solution
The fourth proportional to 402,440.12, 555,136.12 and 251,274.68 is: 346,614.67
Step by Step Solution
- Step 1: Write the proportion equation
402,440.12 : 555,136.12 = 251,274.68 : x - Step 2: Convert to fraction form
402,440.12/555,136.12 = 251,274.68/x - Step 3: Cross multiply
402,440.12x = 555,136.12 × 251,274.68 - Step 4: Simplify right side
402,440.12x = 139,491,651,737.58 - Step 5: Solve for x
x = 139,491,651,737.58/402,440.12 - Step 6: Final answer
x = 346,614.67
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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.