Finding the Fourth Proportional to 328,679.65, 450,288.98 and 316,388.91
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Solution
The fourth proportional to 328,679.65, 450,288.98 and 316,388.91 is: 433,450.75
Step by Step Solution
- Step 1: Write the proportion equation
328,679.65 : 450,288.98 = 316,388.91 : x - Step 2: Convert to fraction form
328,679.65/450,288.98 = 316,388.91/x - Step 3: Cross multiply
328,679.65x = 450,288.98 × 316,388.91 - Step 4: Simplify right side
328,679.65x = 142,466,440,860.31 - Step 5: Solve for x
x = 142,466,440,860.31/328,679.65 - Step 6: Final answer
x = 433,450.75
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.