Finding the Fourth Proportional to 291,730.40, 438,251.70 and 280,576.70
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Solution
The fourth proportional to 291,730.40, 438,251.70 and 280,576.70 is: 421,496.07
Step by Step Solution
- Step 1: Write the proportion equation
291,730.40 : 438,251.70 = 280,576.70 : x - Step 2: Convert to fraction form
291,730.40/438,251.70 = 280,576.70/x - Step 3: Cross multiply
291,730.40x = 438,251.70 × 280,576.70 - Step 4: Simplify right side
291,730.40x = 122,963,215,755.39 - Step 5: Solve for x
x = 122,963,215,755.39/291,730.40 - Step 6: Final answer
x = 421,496.07
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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.