Finding the Fourth Proportional to 388,408.14, 536,168.91 and 261,157.50
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Solution
The fourth proportional to 388,408.14, 536,168.91 and 261,157.50 is: 360,508.75
Step by Step Solution
- Step 1: Write the proportion equation
388,408.14 : 536,168.91 = 261,157.50 : x - Step 2: Convert to fraction form
388,408.14/536,168.91 = 261,157.50/x - Step 3: Cross multiply
388,408.14x = 536,168.91 × 261,157.50 - Step 4: Simplify right side
388,408.14x = 140,024,532,113.33 - Step 5: Solve for x
x = 140,024,532,113.33/388,408.14 - Step 6: Final answer
x = 360,508.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.