Finding the Fourth Proportional to 278,348.05, 417,544.62 and 78,670.09
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Solution
The fourth proportional to 278,348.05, 417,544.62 and 78,670.09 is: 118,011.51
Step by Step Solution
- Step 1: Write the proportion equation
278,348.05 : 417,544.62 = 78,670.09 : x - Step 2: Convert to fraction form
278,348.05/417,544.62 = 78,670.09/x - Step 3: Cross multiply
278,348.05x = 417,544.62 × 78,670.09 - Step 4: Simplify right side
278,348.05x = 32,848,272,834.42 - Step 5: Solve for x
x = 32,848,272,834.42/278,348.05 - Step 6: Final answer
x = 118,011.51
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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.