Finding the Fourth Proportional to 278,781.51, 384,717.46 and 151,455.99
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Solution
The fourth proportional to 278,781.51, 384,717.46 and 151,455.99 is: 209,008.71
Step by Step Solution
- Step 1: Write the proportion equation
278,781.51 : 384,717.46 = 151,455.99 : x - Step 2: Convert to fraction form
278,781.51/384,717.46 = 151,455.99/x - Step 3: Cross multiply
278,781.51x = 384,717.46 × 151,455.99 - Step 4: Simplify right side
278,781.51x = 58,267,763,774.59 - Step 5: Solve for x
x = 58,267,763,774.59/278,781.51 - Step 6: Final answer
x = 209,008.71
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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.