Finding the Fourth Proportional to 319,878.18, 479,817.88 and 83,220.48
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Solution
The fourth proportional to 319,878.18, 479,817.88 and 83,220.48 is: 124,830.88
Step by Step Solution
- Step 1: Write the proportion equation
319,878.18 : 479,817.88 = 83,220.48 : x - Step 2: Convert to fraction form
319,878.18/479,817.88 = 83,220.48/x - Step 3: Cross multiply
319,878.18x = 479,817.88 × 83,220.48 - Step 4: Simplify right side
319,878.18x = 39,930,674,286.18 - Step 5: Solve for x
x = 39,930,674,286.18/319,878.18 - Step 6: Final answer
x = 124,830.88
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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.