Finding the Fourth Proportional to 479,192.20, 661,497.78 and 309,509.08
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Solution
The fourth proportional to 479,192.20, 661,497.78 and 309,509.08 is: 427,259.81
Step by Step Solution
- Step 1: Write the proportion equation
479,192.20 : 661,497.78 = 309,509.08 : x - Step 2: Convert to fraction form
479,192.20/661,497.78 = 309,509.08/x - Step 3: Cross multiply
479,192.20x = 661,497.78 × 309,509.08 - Step 4: Simplify right side
479,192.20x = 204,739,569,309.84 - Step 5: Solve for x
x = 204,739,569,309.84/479,192.20 - Step 6: Final answer
x = 427,259.81
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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.