Finding the Fourth Proportional to 427,721.13, 641,290.09 and 216,952.65
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Solution
The fourth proportional to 427,721.13, 641,290.09 and 216,952.65 is: 325,281.06
Step by Step Solution
- Step 1: Write the proportion equation
427,721.13 : 641,290.09 = 216,952.65 : x - Step 2: Convert to fraction form
427,721.13/641,290.09 = 216,952.65/x - Step 3: Cross multiply
427,721.13x = 641,290.09 × 216,952.65 - Step 4: Simplify right side
427,721.13x = 139,129,584,444.24 - Step 5: Solve for x
x = 139,129,584,444.24/427,721.13 - Step 6: Final answer
x = 325,281.06
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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.