Finding the Fourth Proportional to 385,616.36, 578,589.74 and 149,125.12
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Solution
The fourth proportional to 385,616.36, 578,589.74 and 149,125.12 is: 223,751.57
Step by Step Solution
- Step 1: Write the proportion equation
385,616.36 : 578,589.74 = 149,125.12 : x - Step 2: Convert to fraction form
385,616.36/578,589.74 = 149,125.12/x - Step 3: Cross multiply
385,616.36x = 578,589.74 × 149,125.12 - Step 4: Simplify right side
385,616.36x = 86,282,264,408.27 - Step 5: Solve for x
x = 86,282,264,408.27/385,616.36 - Step 6: Final answer
x = 223,751.57
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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.