Finding the Fourth Proportional to 286,865.28, 395,865.12 and 157,803.12
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Solution
The fourth proportional to 286,865.28, 395,865.12 and 157,803.12 is: 217,763.37
Step by Step Solution
- Step 1: Write the proportion equation
286,865.28 : 395,865.12 = 157,803.12 : x - Step 2: Convert to fraction form
286,865.28/395,865.12 = 157,803.12/x - Step 3: Cross multiply
286,865.28x = 395,865.12 × 157,803.12 - Step 4: Simplify right side
286,865.28x = 62,468,751,035.17 - Step 5: Solve for x
x = 62,468,751,035.17/286,865.28 - Step 6: Final answer
x = 217,763.37
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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.