Finding the Fourth Proportional to 287,405.10, 430,371.56 and 239,902.08
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Solution
The fourth proportional to 287,405.10, 430,371.56 and 239,902.08 is: 359,238.69
Step by Step Solution
- Step 1: Write the proportion equation
287,405.10 : 430,371.56 = 239,902.08 : x - Step 2: Convert to fraction form
287,405.10/430,371.56 = 239,902.08/x - Step 3: Cross multiply
287,405.10x = 430,371.56 × 239,902.08 - Step 4: Simplify right side
287,405.10x = 103,247,032,416.85 - Step 5: Solve for x
x = 103,247,032,416.85/287,405.10 - Step 6: Final answer
x = 359,238.69
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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.