Finding the Fourth Proportional to 395,136.75, 545,297.36 and 216,288.75
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Solution
The fourth proportional to 395,136.75, 545,297.36 and 216,288.75 is: 298,483.20
Step by Step Solution
- Step 1: Write the proportion equation
395,136.75 : 545,297.36 = 216,288.75 : x - Step 2: Convert to fraction form
395,136.75/545,297.36 = 216,288.75/x - Step 3: Cross multiply
395,136.75x = 545,297.36 × 216,288.75 - Step 4: Simplify right side
395,136.75x = 117,941,683,291.26 - Step 5: Solve for x
x = 117,941,683,291.26/395,136.75 - Step 6: Final answer
x = 298,483.20
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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.