Finding the Fourth Proportional to 309,178.10, 426,568.92 and 173,193.68
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Solution
The fourth proportional to 309,178.10, 426,568.92 and 173,193.68 is: 238,953.02
Step by Step Solution
- Step 1: Write the proportion equation
309,178.10 : 426,568.92 = 173,193.68 : x - Step 2: Convert to fraction form
309,178.10/426,568.92 = 173,193.68/x - Step 3: Cross multiply
309,178.10x = 426,568.92 × 173,193.68 - Step 4: Simplify right side
309,178.10x = 73,879,038,895.58 - Step 5: Solve for x
x = 73,879,038,895.58/309,178.10 - Step 6: Final answer
x = 238,953.02
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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.