Finding the Fourth Proportional to 478,984.87, 718,268.68 and 137,352.81
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Solution
The fourth proportional to 478,984.87, 718,268.68 and 137,352.81 is: 205,969.39
Step by Step Solution
- Step 1: Write the proportion equation
478,984.87 : 718,268.68 = 137,352.81 : x - Step 2: Convert to fraction form
478,984.87/718,268.68 = 137,352.81/x - Step 3: Cross multiply
478,984.87x = 718,268.68 × 137,352.81 - Step 4: Simplify right side
478,984.87x = 98,656,221,532.99 - Step 5: Solve for x
x = 98,656,221,532.99/478,984.87 - Step 6: Final answer
x = 205,969.39
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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.