Finding the Fourth Proportional to 260,221.78, 390,333.89 and 80,304.99
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Solution
The fourth proportional to 260,221.78, 390,333.89 and 80,304.99 is: 120,457.86
Step by Step Solution
- Step 1: Write the proportion equation
260,221.78 : 390,333.89 = 80,304.99 : x - Step 2: Convert to fraction form
260,221.78/390,333.89 = 80,304.99/x - Step 3: Cross multiply
260,221.78x = 390,333.89 × 80,304.99 - Step 4: Simplify right side
260,221.78x = 31,345,759,133.11 - Step 5: Solve for x
x = 31,345,759,133.11/260,221.78 - Step 6: Final answer
x = 120,457.86
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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.