Finding the Fourth Proportional to 389,610.36, 537,657.06 and 217,530.96
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Solution
The fourth proportional to 389,610.36, 537,657.06 and 217,530.96 is: 300,189.80
Step by Step Solution
- Step 1: Write the proportion equation
389,610.36 : 537,657.06 = 217,530.96 : x - Step 2: Convert to fraction form
389,610.36/537,657.06 = 217,530.96/x - Step 3: Cross multiply
389,610.36x = 537,657.06 × 217,530.96 - Step 4: Simplify right side
389,610.36x = 116,957,056,412.58 - Step 5: Solve for x
x = 116,957,056,412.58/389,610.36 - Step 6: Final answer
x = 300,189.80
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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.