Finding the Fourth Proportional to 239,025.20, 358,537.80 and 207,921.20
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Solution
The fourth proportional to 239,025.20, 358,537.80 and 207,921.20 is: 311,881.80
Step by Step Solution
- Step 1: Write the proportion equation
239,025.20 : 358,537.80 = 207,921.20 : x - Step 2: Convert to fraction form
239,025.20/358,537.80 = 207,921.20/x - Step 3: Cross multiply
239,025.20x = 358,537.80 × 207,921.20 - Step 4: Simplify right side
239,025.20x = 74,547,609,621.36 - Step 5: Solve for x
x = 74,547,609,621.36/239,025.20 - Step 6: Final answer
x = 311,881.80
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1.5x scale
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.