Finding the Fourth Proportional to 282,629.94, 390,024.79 and 155,302.80
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Solution
The fourth proportional to 282,629.94, 390,024.79 and 155,302.80 is: 214,315.38
Step by Step Solution
- Step 1: Write the proportion equation
282,629.94 : 390,024.79 = 155,302.80 : x - Step 2: Convert to fraction form
282,629.94/390,024.79 = 155,302.80/x - Step 3: Cross multiply
282,629.94x = 390,024.79 × 155,302.80 - Step 4: Simplify right side
282,629.94x = 60,571,941,956.41 - Step 5: Solve for x
x = 60,571,941,956.41/282,629.94 - Step 6: Final answer
x = 214,315.38
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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.