Finding the Fourth Proportional to 328,502.70, 491,832.45 and 319,286.70
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Solution
The fourth proportional to 328,502.70, 491,832.45 and 319,286.70 is: 478,034.31
Step by Step Solution
- Step 1: Write the proportion equation
328,502.70 : 491,832.45 = 319,286.70 : x - Step 2: Convert to fraction form
328,502.70/491,832.45 = 319,286.70/x - Step 3: Cross multiply
328,502.70x = 491,832.45 × 319,286.70 - Step 4: Simplify right side
328,502.70x = 157,035,559,913.42 - Step 5: Solve for x
x = 157,035,559,913.42/328,502.70 - Step 6: Final answer
x = 478,034.31
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.