Finding the Fourth Proportional to 317,688.20, 476,402.70 and 107,217.80
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Solution
The fourth proportional to 317,688.20, 476,402.70 and 107,217.80 is: 160,782.96
Step by Step Solution
- Step 1: Write the proportion equation
317,688.20 : 476,402.70 = 107,217.80 : x - Step 2: Convert to fraction form
317,688.20/476,402.70 = 107,217.80/x - Step 3: Cross multiply
317,688.20x = 476,402.70 × 107,217.80 - Step 4: Simplify right side
317,688.20x = 51,078,849,408.06 - Step 5: Solve for x
x = 51,078,849,408.06/317,688.20 - Step 6: Final answer
x = 160,782.96
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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.