Finding the Fourth Proportional to 313,863.66, 432,991.98 and 209,116.08
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Solution
The fourth proportional to 313,863.66, 432,991.98 and 209,116.08 is: 288,487.00
Step by Step Solution
- Step 1: Write the proportion equation
313,863.66 : 432,991.98 = 209,116.08 : x - Step 2: Convert to fraction form
313,863.66/432,991.98 = 209,116.08/x - Step 3: Cross multiply
313,863.66x = 432,991.98 × 209,116.08 - Step 4: Simplify right side
313,863.66x = 90,545,585,529.04 - Step 5: Solve for x
x = 90,545,585,529.04/313,863.66 - Step 6: Final answer
x = 288,487.00
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1.5x scale
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.