Finding the Fourth Proportional to 201,989.71, 278,733.28 and 111,340.99
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Solution
The fourth proportional to 201,989.71, 278,733.28 and 111,340.99 is: 153,643.67
Step by Step Solution
- Step 1: Write the proportion equation
201,989.71 : 278,733.28 = 111,340.99 : x - Step 2: Convert to fraction form
201,989.71/278,733.28 = 111,340.99/x - Step 3: Cross multiply
201,989.71x = 278,733.28 × 111,340.99 - Step 4: Simplify right side
201,989.71x = 31,034,439,341.15 - Step 5: Solve for x
x = 31,034,439,341.15/201,989.71 - Step 6: Final answer
x = 153,643.67
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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.