Finding the Fourth Proportional to 458,589.70, 687,884.55 and 209,271.70
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Solution
The fourth proportional to 458,589.70, 687,884.55 and 209,271.70 is: 313,907.55
Step by Step Solution
- Step 1: Write the proportion equation
458,589.70 : 687,884.55 = 209,271.70 : x - Step 2: Convert to fraction form
458,589.70/687,884.55 = 209,271.70/x - Step 3: Cross multiply
458,589.70x = 687,884.55 × 209,271.70 - Step 4: Simplify right side
458,589.70x = 143,954,769,182.24 - Step 5: Solve for x
x = 143,954,769,182.24/458,589.70 - Step 6: Final answer
x = 313,907.55
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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.