Finding the Fourth Proportional to 383,643.86, 529,416.36 and 211,569.08
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Solution
The fourth proportional to 383,643.86, 529,416.36 and 211,569.08 is: 291,958.62
Step by Step Solution
- Step 1: Write the proportion equation
383,643.86 : 529,416.36 = 211,569.08 : x - Step 2: Convert to fraction form
383,643.86/529,416.36 = 211,569.08/x - Step 3: Cross multiply
383,643.86x = 529,416.36 × 211,569.08 - Step 4: Simplify right side
383,643.86x = 112,008,129,575.07 - Step 5: Solve for x
x = 112,008,129,575.07/383,643.86 - Step 6: Final answer
x = 291,958.62
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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.