Finding the Fourth Proportional to 289,782.96, 399,919.68 and 162,466.80
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Solution
The fourth proportional to 289,782.96, 399,919.68 and 162,466.80 is: 224,214.95
Step by Step Solution
- Step 1: Write the proportion equation
289,782.96 : 399,919.68 = 162,466.80 : x - Step 2: Convert to fraction form
289,782.96/399,919.68 = 162,466.80/x - Step 3: Cross multiply
289,782.96x = 399,919.68 × 162,466.80 - Step 4: Simplify right side
289,782.96x = 64,973,670,666.62 - Step 5: Solve for x
x = 64,973,670,666.62/289,782.96 - Step 6: Final answer
x = 224,214.95
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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.