Finding the Fourth Proportional to 313,988.21, 470,916.37 and 103,576.85
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Solution
The fourth proportional to 313,988.21, 470,916.37 and 103,576.85 is: 155,343.52
Step by Step Solution
- Step 1: Write the proportion equation
313,988.21 : 470,916.37 = 103,576.85 : x - Step 2: Convert to fraction form
313,988.21/470,916.37 = 103,576.85/x - Step 3: Cross multiply
313,988.21x = 470,916.37 × 103,576.85 - Step 4: Simplify right side
313,988.21x = 48,776,033,700.15 - Step 5: Solve for x
x = 48,776,033,700.15/313,988.21 - Step 6: Final answer
x = 155,343.52
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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.