Finding the Fourth Proportional to 203,564.21, 280,923.12 and 112,917.23
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Solution
The fourth proportional to 203,564.21, 280,923.12 and 112,917.23 is: 155,828.28
Step by Step Solution
- Step 1: Write the proportion equation
203,564.21 : 280,923.12 = 112,917.23 : x - Step 2: Convert to fraction form
203,564.21/280,923.12 = 112,917.23/x - Step 3: Cross multiply
203,564.21x = 280,923.12 × 112,917.23 - Step 4: Simplify right side
203,564.21x = 31,721,060,553.36 - Step 5: Solve for x
x = 31,721,060,553.36/203,564.21 - Step 6: Final answer
x = 155,828.28
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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.