Finding the Fourth Proportional to 478,993.96, 661,027.63 and 261,214.55
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Solution
The fourth proportional to 478,993.96, 661,027.63 and 261,214.55 is: 360,484.79
Step by Step Solution
- Step 1: Write the proportion equation
478,993.96 : 661,027.63 = 261,214.55 : x - Step 2: Convert to fraction form
478,993.96/661,027.63 = 261,214.55/x - Step 3: Cross multiply
478,993.96x = 661,027.63 × 261,214.55 - Step 4: Simplify right side
478,993.96x = 172,670,034,908.02 - Step 5: Solve for x
x = 172,670,034,908.02/478,993.96 - Step 6: Final answer
x = 360,484.79
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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.