Finding the Fourth Proportional to 355,312.09, 490,328.87 and 210,170.01
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Solution
The fourth proportional to 355,312.09, 490,328.87 and 210,170.01 is: 290,033.54
Step by Step Solution
- Step 1: Write the proportion equation
355,312.09 : 490,328.87 = 210,170.01 : x - Step 2: Convert to fraction form
355,312.09/490,328.87 = 210,170.01/x - Step 3: Cross multiply
355,312.09x = 490,328.87 × 210,170.01 - Step 4: Simplify right side
355,312.09x = 103,052,423,511.19 - Step 5: Solve for x
x = 103,052,423,511.19/355,312.09 - Step 6: Final answer
x = 290,033.54
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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.