Finding the Fourth Proportional to 382,964.78, 528,486.95 and 210,879.18
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Solution
The fourth proportional to 382,964.78, 528,486.95 and 210,879.18 is: 291,010.82
Step by Step Solution
- Step 1: Write the proportion equation
382,964.78 : 528,486.95 = 210,879.18 : x - Step 2: Convert to fraction form
382,964.78/528,486.95 = 210,879.18/x - Step 3: Cross multiply
382,964.78x = 528,486.95 × 210,879.18 - Step 4: Simplify right side
382,964.78x = 111,446,895,183.90 - Step 5: Solve for x
x = 111,446,895,183.90/382,964.78 - Step 6: Final answer
x = 291,010.82
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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.