Finding the Fourth Proportional to 389,134.95, 536,983.08 and 225,778.80
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Solution
The fourth proportional to 389,134.95, 536,983.08 and 225,778.80 is: 311,561.31
Step by Step Solution
- Step 1: Write the proportion equation
389,134.95 : 536,983.08 = 225,778.80 : x - Step 2: Convert to fraction form
389,134.95/536,983.08 = 225,778.80/x - Step 3: Cross multiply
389,134.95x = 536,983.08 × 225,778.80 - Step 4: Simplify right side
389,134.95x = 121,239,395,422.70 - Step 5: Solve for x
x = 121,239,395,422.70/389,134.95 - Step 6: Final answer
x = 311,561.31
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.