Finding the Fourth Proportional to 309,389.10, 426,976.68 and 173,423.08
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Solution
The fourth proportional to 309,389.10, 426,976.68 and 173,423.08 is: 239,334.90
Step by Step Solution
- Step 1: Write the proportion equation
309,389.10 : 426,976.68 = 173,423.08 : x - Step 2: Convert to fraction form
309,389.10/426,976.68 = 173,423.08/x - Step 3: Cross multiply
309,389.10x = 426,976.68 × 173,423.08 - Step 4: Simplify right side
309,389.10x = 74,047,609,716.09 - Step 5: Solve for x
x = 74,047,609,716.09/309,389.10 - Step 6: Final answer
x = 239,334.90
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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.