Finding the Fourth Proportional to 282,353.13, 389,653.61 and 155,029.23
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Solution
The fourth proportional to 282,353.13, 389,653.61 and 155,029.23 is: 213,943.79
Step by Step Solution
- Step 1: Write the proportion equation
282,353.13 : 389,653.61 = 155,029.23 : x - Step 2: Convert to fraction form
282,353.13/389,653.61 = 155,029.23/x - Step 3: Cross multiply
282,353.13x = 389,653.61 × 155,029.23 - Step 4: Simplify right side
282,353.13x = 60,407,698,349.87 - Step 5: Solve for x
x = 60,407,698,349.87/282,353.13 - Step 6: Final answer
x = 213,943.79
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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.