Finding the Fourth Proportional to 201,748.30, 278,407.12 and 115,721.71
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Solution
The fourth proportional to 201,748.30, 278,407.12 and 115,721.71 is: 159,692.79
Step by Step Solution
- Step 1: Write the proportion equation
201,748.30 : 278,407.12 = 115,721.71 : x - Step 2: Convert to fraction form
201,748.30/278,407.12 = 115,721.71/x - Step 3: Cross multiply
201,748.30x = 278,407.12 × 115,721.71 - Step 4: Simplify right side
201,748.30x = 32,217,748,002.58 - Step 5: Solve for x
x = 32,217,748,002.58/201,748.30 - Step 6: Final answer
x = 159,692.79
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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.