Finding the Fourth Proportional to 310,407.36, 427,953.60 and 202,790.40
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Solution
The fourth proportional to 310,407.36, 427,953.60 and 202,790.40 is: 279,583.84
Step by Step Solution
- Step 1: Write the proportion equation
310,407.36 : 427,953.60 = 202,790.40 : x - Step 2: Convert to fraction form
310,407.36/427,953.60 = 202,790.40/x - Step 3: Cross multiply
310,407.36x = 427,953.60 × 202,790.40 - Step 4: Simplify right side
310,407.36x = 86,784,881,725.44 - Step 5: Solve for x
x = 86,784,881,725.44/310,407.36 - Step 6: Final answer
x = 279,583.84
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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.