Finding the Fourth Proportional to 260,220.78, 390,332.39 and 80,303.99
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Solution
The fourth proportional to 260,220.78, 390,332.39 and 80,303.99 is: 120,456.35
Step by Step Solution
- Step 1: Write the proportion equation
260,220.78 : 390,332.39 = 80,303.99 : x - Step 2: Convert to fraction form
260,220.78/390,332.39 = 80,303.99/x - Step 3: Cross multiply
260,220.78x = 390,332.39 × 80,303.99 - Step 4: Simplify right side
260,220.78x = 31,345,245,990.05 - Step 5: Solve for x
x = 31,345,245,990.05/260,220.78 - Step 6: Final answer
x = 120,456.35
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1.5x scale
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.