Finding the Fourth Proportional to 257,636.55, 355,580.97 and 142,952.09
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Solution
The fourth proportional to 257,636.55, 355,580.97 and 142,952.09 is: 197,297.49
Step by Step Solution
- Step 1: Write the proportion equation
257,636.55 : 355,580.97 = 142,952.09 : x - Step 2: Convert to fraction form
257,636.55/355,580.97 = 142,952.09/x - Step 3: Cross multiply
257,636.55x = 355,580.97 × 142,952.09 - Step 4: Simplify right side
257,636.55x = 50,831,043,316.00 - Step 5: Solve for x
x = 50,831,043,316.00/257,636.55 - Step 6: Final answer
x = 197,297.49
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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.