Finding the Fourth Proportional to 201,947.40, 302,921.10 and 138,961.80
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Solution
The fourth proportional to 201,947.40, 302,921.10 and 138,961.80 is: 208,442.70
Step by Step Solution
- Step 1: Write the proportion equation
201,947.40 : 302,921.10 = 138,961.80 : x - Step 2: Convert to fraction form
201,947.40/302,921.10 = 138,961.80/x - Step 3: Cross multiply
201,947.40x = 302,921.10 × 138,961.80 - Step 4: Simplify right side
201,947.40x = 42,094,461,313.98 - Step 5: Solve for x
x = 42,094,461,313.98/201,947.40 - Step 6: Final answer
x = 208,442.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.