Finding the Fourth Proportional to 399,079.09, 550,740.82 and 217,802.65
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Solution
The fourth proportional to 399,079.09, 550,740.82 and 217,802.65 is: 300,574.02
Step by Step Solution
- Step 1: Write the proportion equation
399,079.09 : 550,740.82 = 217,802.65 : x - Step 2: Convert to fraction form
399,079.09/550,740.82 = 217,802.65/x - Step 3: Cross multiply
399,079.09x = 550,740.82 × 217,802.65 - Step 4: Simplify right side
399,079.09x = 119,952,808,029.88 - Step 5: Solve for x
x = 119,952,808,029.88/399,079.09 - Step 6: Final answer
x = 300,574.02
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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.