Finding the Fourth Proportional to 261,646.71, 392,220.95 and 84,029.17
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Solution
The fourth proportional to 261,646.71, 392,220.95 and 84,029.17 is: 125,963.75
Step by Step Solution
- Step 1: Write the proportion equation
261,646.71 : 392,220.95 = 84,029.17 : x - Step 2: Convert to fraction form
261,646.71/392,220.95 = 84,029.17/x - Step 3: Cross multiply
261,646.71x = 392,220.95 × 84,029.17 - Step 4: Simplify right side
261,646.71x = 32,958,000,692.49 - Step 5: Solve for x
x = 32,958,000,692.49/261,646.71 - Step 6: Final answer
x = 125,963.75
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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.