Finding the Fourth Proportional to 438,465.40, 657,503.70 and 201,686.20
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Solution
The fourth proportional to 438,465.40, 657,503.70 and 201,686.20 is: 302,439.88
Step by Step Solution
- Step 1: Write the proportion equation
438,465.40 : 657,503.70 = 201,686.20 : x - Step 2: Convert to fraction form
438,465.40/657,503.70 = 201,686.20/x - Step 3: Cross multiply
438,465.40x = 657,503.70 × 201,686.20 - Step 4: Simplify right side
438,465.40x = 132,609,422,738.94 - Step 5: Solve for x
x = 132,609,422,738.94/438,465.40 - Step 6: Final answer
x = 302,439.88
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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.