Finding the Fourth Proportional to 157,639.20, 236,480.40 and 52,447.20
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Solution
The fourth proportional to 157,639.20, 236,480.40 and 52,447.20 is: 78,677.99
Step by Step Solution
- Step 1: Write the proportion equation
157,639.20 : 236,480.40 = 52,447.20 : x - Step 2: Convert to fraction form
157,639.20/236,480.40 = 52,447.20/x - Step 3: Cross multiply
157,639.20x = 236,480.40 × 52,447.20 - Step 4: Simplify right side
157,639.20x = 12,402,734,834.88 - Step 5: Solve for x
x = 12,402,734,834.88/157,639.20 - Step 6: Final answer
x = 78,677.99
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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.