Finding the Fourth Proportional to 382,643.70, 573,965.55 and 330,155.70
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Solution
The fourth proportional to 382,643.70, 573,965.55 and 330,155.70 is: 495,233.55
Step by Step Solution
- Step 1: Write the proportion equation
382,643.70 : 573,965.55 = 330,155.70 : x - Step 2: Convert to fraction form
382,643.70/573,965.55 = 330,155.70/x - Step 3: Cross multiply
382,643.70x = 573,965.55 × 330,155.70 - Step 4: Simplify right side
382,643.70x = 189,497,997,936.14 - Step 5: Solve for x
x = 189,497,997,936.14/382,643.70 - Step 6: Final answer
x = 495,233.55
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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.