Finding the Fourth Proportional to 282,931.02, 390,438.36 and 155,608.74
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Solution
The fourth proportional to 282,931.02, 390,438.36 and 155,608.74 is: 214,736.52
Step by Step Solution
- Step 1: Write the proportion equation
282,931.02 : 390,438.36 = 155,608.74 : x - Step 2: Convert to fraction form
282,931.02/390,438.36 = 155,608.74/x - Step 3: Cross multiply
282,931.02x = 390,438.36 × 155,608.74 - Step 4: Simplify right side
282,931.02x = 60,755,621,247.27 - Step 5: Solve for x
x = 60,755,621,247.27/282,931.02 - Step 6: Final answer
x = 214,736.52
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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.