Finding the Fourth Proportional to 260,389.23, 390,731.36 and 102,728.40
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Solution
The fourth proportional to 260,389.23, 390,731.36 and 102,728.40 is: 154,150.80
Step by Step Solution
- Step 1: Write the proportion equation
260,389.23 : 390,731.36 = 102,728.40 : x - Step 2: Convert to fraction form
260,389.23/390,731.36 = 102,728.40/x - Step 3: Cross multiply
260,389.23x = 390,731.36 × 102,728.40 - Step 4: Simplify right side
260,389.23x = 40,139,206,928.98 - Step 5: Solve for x
x = 40,139,206,928.98/260,389.23 - Step 6: Final answer
x = 154,150.80
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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.