Finding the Fourth Proportional to 389,045.84, 536,887.36 and 219,279.96
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Solution
The fourth proportional to 389,045.84, 536,887.36 and 219,279.96 is: 302,608.66
Step by Step Solution
- Step 1: Write the proportion equation
389,045.84 : 536,887.36 = 219,279.96 : x - Step 2: Convert to fraction form
389,045.84/536,887.36 = 219,279.96/x - Step 3: Cross multiply
389,045.84x = 536,887.36 × 219,279.96 - Step 4: Simplify right side
389,045.84x = 117,728,639,619.32 - Step 5: Solve for x
x = 117,728,639,619.32/389,045.84 - Step 6: Final answer
x = 302,608.66
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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.