Finding the Fourth Proportional to 393,059.58, 542,254.14 and 256,857.12
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Solution
The fourth proportional to 393,059.58, 542,254.14 and 256,857.12 is: 354,352.99
Step by Step Solution
- Step 1: Write the proportion equation
393,059.58 : 542,254.14 = 256,857.12 : x - Step 2: Convert to fraction form
393,059.58/542,254.14 = 256,857.12/x - Step 3: Cross multiply
393,059.58x = 542,254.14 × 256,857.12 - Step 4: Simplify right side
393,059.58x = 139,281,836,708.48 - Step 5: Solve for x
x = 139,281,836,708.48/393,059.58 - Step 6: Final answer
x = 354,352.99
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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.