Finding the Fourth Proportional to 381,210.82, 526,075.00 and 209,129.09
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Solution
The fourth proportional to 381,210.82, 526,075.00 and 209,129.09 is: 288,600.38
Step by Step Solution
- Step 1: Write the proportion equation
381,210.82 : 526,075.00 = 209,129.09 : x - Step 2: Convert to fraction form
381,210.82/526,075.00 = 209,129.09/x - Step 3: Cross multiply
381,210.82x = 526,075.00 × 209,129.09 - Step 4: Simplify right side
381,210.82x = 110,017,587,004.08 - Step 5: Solve for x
x = 110,017,587,004.08/381,210.82 - Step 6: Final answer
x = 288,600.38
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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.