Finding the Fourth Proportional to 319,720.99, 479,477.66 and 106,431.61
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Solution
The fourth proportional to 319,720.99, 479,477.66 and 106,431.61 is: 159,612.85
Step by Step Solution
- Step 1: Write the proportion equation
319,720.99 : 479,477.66 = 106,431.61 : x - Step 2: Convert to fraction form
319,720.99/479,477.66 = 106,431.61/x - Step 3: Cross multiply
319,720.99x = 479,477.66 × 106,431.61 - Step 4: Simplify right side
319,720.99x = 51,031,578,780.67 - Step 5: Solve for x
x = 51,031,578,780.67/319,720.99 - Step 6: Final answer
x = 159,612.85
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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.