Finding the Fourth Proportional to 478,990.62, 718,277.27 and 137,358.68
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Solution
The fourth proportional to 478,990.62, 718,277.27 and 137,358.68 is: 205,978.17
Step by Step Solution
- Step 1: Write the proportion equation
478,990.62 : 718,277.27 = 137,358.68 : x - Step 2: Convert to fraction form
478,990.62/718,277.27 = 137,358.68/x - Step 3: Cross multiply
478,990.62x = 718,277.27 × 137,358.68 - Step 4: Simplify right side
478,990.62x = 98,661,613,403.02 - Step 5: Solve for x
x = 98,661,613,403.02/478,990.62 - Step 6: Final answer
x = 205,978.17
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.