Finding the Fourth Proportional to 341,886.19, 512,849.36 and 128,655.92
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Solution
The fourth proportional to 341,886.19, 512,849.36 and 128,655.92 is: 192,991.43
Step by Step Solution
- Step 1: Write the proportion equation
341,886.19 : 512,849.36 = 128,655.92 : x - Step 2: Convert to fraction form
341,886.19/512,849.36 = 128,655.92/x - Step 3: Cross multiply
341,886.19x = 512,849.36 × 128,655.92 - Step 4: Simplify right side
341,886.19x = 65,981,103,024.68 - Step 5: Solve for x
x = 65,981,103,024.68/341,886.19 - Step 6: Final answer
x = 192,991.43
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.