Finding the Fourth Proportional to 489,668.24, 734,417.70 and 129,841.40
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Solution
The fourth proportional to 489,668.24, 734,417.70 and 129,841.40 is: 194,739.65
Step by Step Solution
- Step 1: Write the proportion equation
489,668.24 : 734,417.70 = 129,841.40 : x - Step 2: Convert to fraction form
489,668.24/734,417.70 = 129,841.40/x - Step 3: Cross multiply
489,668.24x = 734,417.70 × 129,841.40 - Step 4: Simplify right side
489,668.24x = 95,357,822,352.78 - Step 5: Solve for x
x = 95,357,822,352.78/489,668.24 - Step 6: Final answer
x = 194,739.65
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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.