Finding the Fourth Proportional to 259,768.20, 389,652.30 and 213,073.80
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Solution
The fourth proportional to 259,768.20, 389,652.30 and 213,073.80 is: 319,610.70
Step by Step Solution
- Step 1: Write the proportion equation
259,768.20 : 389,652.30 = 213,073.80 : x - Step 2: Convert to fraction form
259,768.20/389,652.30 = 213,073.80/x - Step 3: Cross multiply
259,768.20x = 389,652.30 × 213,073.80 - Step 4: Simplify right side
259,768.20x = 83,024,696,239.74 - Step 5: Solve for x
x = 83,024,696,239.74/259,768.20 - Step 6: Final answer
x = 319,610.70
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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.