Finding the Fourth Proportional to 420,423.58, 580,197.36 and 239,161.78
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Solution
The fourth proportional to 420,423.58, 580,197.36 and 239,161.78 is: 330,050.55
Step by Step Solution
- Step 1: Write the proportion equation
420,423.58 : 580,197.36 = 239,161.78 : x - Step 2: Convert to fraction form
420,423.58/580,197.36 = 239,161.78/x - Step 3: Cross multiply
420,423.58x = 580,197.36 × 239,161.78 - Step 4: Simplify right side
420,423.58x = 138,761,033,368.90 - Step 5: Solve for x
x = 138,761,033,368.90/420,423.58 - Step 6: Final answer
x = 330,050.55
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.