Finding the Fourth Proportional to 239,021.20, 358,531.80 and 207,917.20
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Solution
The fourth proportional to 239,021.20, 358,531.80 and 207,917.20 is: 311,875.80
Step by Step Solution
- Step 1: Write the proportion equation
239,021.20 : 358,531.80 = 207,917.20 : x - Step 2: Convert to fraction form
239,021.20/358,531.80 = 207,917.20/x - Step 3: Cross multiply
239,021.20x = 358,531.80 × 207,917.20 - Step 4: Simplify right side
239,021.20x = 74,544,927,966.96 - Step 5: Solve for x
x = 74,544,927,966.96/239,021.20 - Step 6: Final answer
x = 311,875.80
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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.