Finding the Fourth Proportional to 395,263.28, 545,463.21 and 213,975.07
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Solution
The fourth proportional to 395,263.28, 545,463.21 and 213,975.07 is: 295,285.54
Step by Step Solution
- Step 1: Write the proportion equation
395,263.28 : 545,463.21 = 213,975.07 : x - Step 2: Convert to fraction form
395,263.28/545,463.21 = 213,975.07/x - Step 3: Cross multiply
395,263.28x = 545,463.21 × 213,975.07 - Step 4: Simplify right side
395,263.28x = 116,715,528,421.60 - Step 5: Solve for x
x = 116,715,528,421.60/395,263.28 - Step 6: Final answer
x = 295,285.54
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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.