Finding the Fourth Proportional to 207,389.20, 310,306.20 and 137,405.20
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Solution
The fourth proportional to 207,389.20, 310,306.20 and 137,405.20 is: 205,592.60
Step by Step Solution
- Step 1: Write the proportion equation
207,389.20 : 310,306.20 = 137,405.20 : x - Step 2: Convert to fraction form
207,389.20/310,306.20 = 137,405.20/x - Step 3: Cross multiply
207,389.20x = 310,306.20 × 137,405.20 - Step 4: Simplify right side
207,389.20x = 42,637,685,472.24 - Step 5: Solve for x
x = 42,637,685,472.24/207,389.20 - Step 6: Final answer
x = 205,592.60
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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.