Finding the Fourth Proportional to 478,981.20, 718,471.68 and 163,438.08
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Solution
The fourth proportional to 478,981.20, 718,471.68 and 163,438.08 is: 245,157.08
Step by Step Solution
- Step 1: Write the proportion equation
478,981.20 : 718,471.68 = 163,438.08 : x - Step 2: Convert to fraction form
478,981.20/718,471.68 = 163,438.08/x - Step 3: Cross multiply
478,981.20x = 718,471.68 × 163,438.08 - Step 4: Simplify right side
478,981.20x = 117,425,631,913.57 - Step 5: Solve for x
x = 117,425,631,913.57/478,981.20 - Step 6: Final answer
x = 245,157.08
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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.