Finding the Fourth Proportional to 394,980.75, 545,073.80 and 216,132.75
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Solution
The fourth proportional to 394,980.75, 545,073.80 and 216,132.75 is: 298,263.39
Step by Step Solution
- Step 1: Write the proportion equation
394,980.75 : 545,073.80 = 216,132.75 : x - Step 2: Convert to fraction form
394,980.75/545,073.80 = 216,132.75/x - Step 3: Cross multiply
394,980.75x = 545,073.80 × 216,132.75 - Step 4: Simplify right side
394,980.75x = 117,808,298,266.29 - Step 5: Solve for x
x = 117,808,298,266.29/394,980.75 - Step 6: Final answer
x = 298,263.39
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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.