Finding the Fourth Proportional to 495,415.20, 743,122.80 and 121,438.20
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Solution
The fourth proportional to 495,415.20, 743,122.80 and 121,438.20 is: 182,157.30
Step by Step Solution
- Step 1: Write the proportion equation
495,415.20 : 743,122.80 = 121,438.20 : x - Step 2: Convert to fraction form
495,415.20/743,122.80 = 121,438.20/x - Step 3: Cross multiply
495,415.20x = 743,122.80 × 121,438.20 - Step 4: Simplify right side
495,415.20x = 90,243,495,210.96 - Step 5: Solve for x
x = 90,243,495,210.96/495,415.20 - Step 6: Final answer
x = 182,157.30
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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.