Finding the Fourth Proportional to 245,807.84, 339,221.39 and 138,381.95
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Solution
The fourth proportional to 245,807.84, 339,221.39 and 138,381.95 is: 190,970.79
Step by Step Solution
- Step 1: Write the proportion equation
245,807.84 : 339,221.39 = 138,381.95 : x - Step 2: Convert to fraction form
245,807.84/339,221.39 = 138,381.95/x - Step 3: Cross multiply
245,807.84x = 339,221.39 × 138,381.95 - Step 4: Simplify right side
245,807.84x = 46,942,117,586.05 - Step 5: Solve for x
x = 46,942,117,586.05/245,807.84 - Step 6: Final answer
x = 190,970.79
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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.