Finding the Fourth Proportional to 261,467.19, 392,149.14 and 71,878.63
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Solution
The fourth proportional to 261,467.19, 392,149.14 and 71,878.63 is: 107,803.75
Step by Step Solution
- Step 1: Write the proportion equation
261,467.19 : 392,149.14 = 71,878.63 : x - Step 2: Convert to fraction form
261,467.19/392,149.14 = 71,878.63/x - Step 3: Cross multiply
261,467.19x = 392,149.14 × 71,878.63 - Step 4: Simplify right side
261,467.19x = 28,187,142,938.88 - Step 5: Solve for x
x = 28,187,142,938.88/261,467.19 - Step 6: Final answer
x = 107,803.75
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1.5x scale
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.