Finding the Fourth Proportional to 478,909.99, 718,616.49 and 212,861.44
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Solution
The fourth proportional to 478,909.99, 718,616.49 and 212,861.44 is: 319,403.95
Step by Step Solution
- Step 1: Write the proportion equation
478,909.99 : 718,616.49 = 212,861.44 : x - Step 2: Convert to fraction form
478,909.99/718,616.49 = 212,861.44/x - Step 3: Cross multiply
478,909.99x = 718,616.49 × 212,861.44 - Step 4: Simplify right side
478,909.99x = 152,965,740,869.15 - Step 5: Solve for x
x = 152,965,740,869.15/478,909.99 - Step 6: Final answer
x = 319,403.95
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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.