Finding the Fourth Proportional to 438,639.10, 658,021.41 and 135,058.95
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Solution
The fourth proportional to 438,639.10, 658,021.41 and 135,058.95 is: 202,607.75
Step by Step Solution
- Step 1: Write the proportion equation
438,639.10 : 658,021.41 = 135,058.95 : x - Step 2: Convert to fraction form
438,639.10/658,021.41 = 135,058.95/x - Step 3: Cross multiply
438,639.10x = 658,021.41 × 135,058.95 - Step 4: Simplify right side
438,639.10x = 88,871,680,712.12 - Step 5: Solve for x
x = 88,871,680,712.12/438,639.10 - Step 6: Final answer
x = 202,607.75
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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.