Finding the Fourth Proportional to 278,501.31, 417,768.21 and 78,804.99
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Solution
The fourth proportional to 278,501.31, 417,768.21 and 78,804.99 is: 118,212.08
Step by Step Solution
- Step 1: Write the proportion equation
278,501.31 : 417,768.21 = 78,804.99 : x - Step 2: Convert to fraction form
278,501.31/417,768.21 = 78,804.99/x - Step 3: Cross multiply
278,501.31x = 417,768.21 × 78,804.99 - Step 4: Simplify right side
278,501.31x = 32,922,219,611.37 - Step 5: Solve for x
x = 32,922,219,611.37/278,501.31 - Step 6: Final answer
x = 118,212.08
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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.