Finding the Fourth Proportional to 280,486.08, 387,070.74 and 153,161.80
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Solution
The fourth proportional to 280,486.08, 387,070.74 and 153,161.80 is: 211,363.26
Step by Step Solution
- Step 1: Write the proportion equation
280,486.08 : 387,070.74 = 153,161.80 : x - Step 2: Convert to fraction form
280,486.08/387,070.74 = 153,161.80/x - Step 3: Cross multiply
280,486.08x = 387,070.74 × 153,161.80 - Step 4: Simplify right side
280,486.08x = 59,284,451,265.73 - Step 5: Solve for x
x = 59,284,451,265.73/280,486.08 - Step 6: Final answer
x = 211,363.26
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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.