Finding the Fourth Proportional to 328,971.80, 493,457.70 and 210,873.80
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Solution
The fourth proportional to 328,971.80, 493,457.70 and 210,873.80 is: 316,310.70
Step by Step Solution
- Step 1: Write the proportion equation
328,971.80 : 493,457.70 = 210,873.80 : x - Step 2: Convert to fraction form
328,971.80/493,457.70 = 210,873.80/x - Step 3: Cross multiply
328,971.80x = 493,457.70 × 210,873.80 - Step 4: Simplify right side
328,971.80x = 104,057,300,338.26 - Step 5: Solve for x
x = 104,057,300,338.26/328,971.80 - Step 6: Final answer
x = 316,310.70
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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.